21051576

素因数分解:

$2^3\times 3^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:65

約数の個数: 288

約数和(自身を含む): 78427440

約数和(自身を除く): 57375864

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 17, 18, 21, 24, 26, 27, 28, 34, 36, 39, 42, 49, 51, 52, 54, 56, 63, 68, 72, 78, 81, 84, 91, 98, 102, 104, 108, 117, 119, 126, 136, 147, 153, 156, 162, 168, 182, 189, 196, 204, 216, 221, 234, 238, 243, 252, 273, 294, 306, 312, 324, 351, 357, 364, 378, 392, 408, 441, 442, 459, 468, 476, 486, 504, 546, 567, 588, 612, 637, 648, 663, 702, 714, 728, 756, 819, 833, 882, 884, 918, 936, 952, 972, 1053, 1071, 1092, 1134, 1176, 1224, 1274, 1323, 1326, 1377, 1404, 1428, 1512, 1547, 1638, 1666, 1701, 1764, 1768, 1836, 1911, 1944, 1989, 2106, 2142, 2184, 2268, 2457, 2499, 2548, 2646, 2652, 2754, 2808, 2856, 3094, 3159, 3213, 3276, 3332, 3402, 3528, 3672, 3822, 3969, 3978, 4131, 4212, 4284, 4536, 4641, 4914, 4998, 5096, 5292, 5304, 5508, 5733, 5967, 6188, 6318, 6426, 6552, 6664, 6804, 7371, 7497, 7644, 7938, 7956, 8262, 8424, 8568, 9282, 9639, 9828, 9996, 10584, 10829, 11016, 11466, 11907, 11934, 12376, 12636, 12852, 13608, 13923, 14742, 14994, 15288, 15876, 15912, 16524, 17199, 17901, 18564, 19278, 19656, 19992, 21658, 22113, 22491, 22932, 23814, 23868, 25272, 25704, 27846, 28917, 29484, 29988, 31752, 32487, 33048, 34398, 35802, 37128, 38556, 41769, 43316, 44226, 44982, 45864, 47628, 47736, 51597, 53703, 55692, 57834, 58968, 59976, 64974, 67473, 68796, 71604, 77112, 83538, 86632, 88452, 89964, 95256, 97461, 103194, 107406, 111384, 115668, 125307, 129948, 134946, 137592, 143208, 154791, 167076, 176904, 179928, 194922, 202419, 206388, 214812, 231336, 250614, 259896, 269892, 292383, 309582, 334152, 375921, 389844, 404838, 412776, 429624, 501228, 539784, 584766, 619164, 751842, 779688, 809676, 877149, 1002456, 1169532, 1238328, 1503684, 1619352, 1754298, 2339064, 2631447, 3007368, 3508596, 5262894, 7017192, 10525788, 21051576]

約数ペア:

[(1, 21051576), (2, 10525788), (3, 7017192), (4, 5262894), (6, 3508596), (7, 3007368), (8, 2631447), (9, 2339064), (12, 1754298), (13, 1619352), (14, 1503684), (17, 1238328), (18, 1169532), (21, 1002456), (24, 877149), (26, 809676), (27, 779688), (28, 751842), (34, 619164), (36, 584766), (39, 539784), (42, 501228), (49, 429624), (51, 412776), (52, 404838), (54, 389844), (56, 375921), (63, 334152), (68, 309582), (72, 292383), (78, 269892), (81, 259896), (84, 250614), (91, 231336), (98, 214812), (102, 206388), (104, 202419), (108, 194922), (117, 179928), (119, 176904), (126, 167076), (136, 154791), (147, 143208), (153, 137592), (156, 134946), (162, 129948), (168, 125307), (182, 115668), (189, 111384), (196, 107406), (204, 103194), (216, 97461), (221, 95256), (234, 89964), (238, 88452), (243, 86632), (252, 83538), (273, 77112), (294, 71604), (306, 68796), (312, 67473), (324, 64974), (351, 59976), (357, 58968), (364, 57834), (378, 55692), (392, 53703), (408, 51597), (441, 47736), (442, 47628), (459, 45864), (468, 44982), (476, 44226), (486, 43316), (504, 41769), (546, 38556), (567, 37128), (588, 35802), (612, 34398), (637, 33048), (648, 32487), (663, 31752), (702, 29988), (714, 29484), (728, 28917), (756, 27846), (819, 25704), (833, 25272), (882, 23868), (884, 23814), (918, 22932), (936, 22491), (952, 22113), (972, 21658), (1053, 19992), (1071, 19656), (1092, 19278), (1134, 18564), (1176, 17901), (1224, 17199), (1274, 16524), (1323, 15912), (1326, 15876), (1377, 15288), (1404, 14994), (1428, 14742), (1512, 13923), (1547, 13608), (1638, 12852), (1666, 12636), (1701, 12376), (1764, 11934), (1768, 11907), (1836, 11466), (1911, 11016), (1944, 10829), (1989, 10584), (2106, 9996), (2142, 9828), (2184, 9639), (2268, 9282), (2457, 8568), (2499, 8424), (2548, 8262), (2646, 7956), (2652, 7938), (2754, 7644), (2808, 7497), (2856, 7371), (3094, 6804), (3159, 6664), (3213, 6552), (3276, 6426), (3332, 6318), (3402, 6188), (3528, 5967), (3672, 5733), (3822, 5508), (3969, 5304), (3978, 5292), (4131, 5096), (4212, 4998), (4284, 4914), (4536, 4641)]