21028896

素因数分解:

$2^5\times 3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:109

約数の個数: 240

約数和(自身を含む): 75620160

約数和(自身を除く): 54591264

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 27, 28, 32, 36, 38, 42, 48, 54, 56, 57, 61, 63, 72, 76, 81, 84, 96, 108, 112, 114, 122, 126, 133, 144, 152, 162, 168, 171, 183, 189, 216, 224, 228, 244, 252, 266, 288, 304, 324, 336, 342, 366, 378, 399, 427, 432, 456, 488, 504, 513, 532, 549, 567, 608, 648, 672, 684, 732, 756, 798, 854, 864, 912, 976, 1008, 1026, 1064, 1098, 1134, 1159, 1197, 1281, 1296, 1368, 1464, 1512, 1539, 1596, 1647, 1708, 1824, 1952, 2016, 2052, 2128, 2196, 2268, 2318, 2394, 2562, 2592, 2736, 2928, 3024, 3078, 3192, 3294, 3416, 3477, 3591, 3843, 4104, 4256, 4392, 4536, 4636, 4788, 4941, 5124, 5472, 5856, 6048, 6156, 6384, 6588, 6832, 6954, 7182, 7686, 8113, 8208, 8784, 9072, 9272, 9576, 9882, 10248, 10431, 10773, 11529, 12312, 12768, 13176, 13664, 13908, 14364, 15372, 16226, 16416, 17568, 18144, 18544, 19152, 19764, 20496, 20862, 21546, 23058, 24339, 24624, 26352, 27816, 28728, 30744, 31293, 32452, 34587, 37088, 38304, 39528, 40992, 41724, 43092, 46116, 48678, 49248, 52704, 55632, 57456, 61488, 62586, 64904, 69174, 73017, 79056, 83448, 86184, 92232, 93879, 97356, 111264, 114912, 122976, 125172, 129808, 138348, 146034, 158112, 166896, 172368, 184464, 187758, 194712, 219051, 250344, 259616, 276696, 292068, 333792, 344736, 368928, 375516, 389424, 438102, 500688, 553392, 584136, 657153, 751032, 778848, 876204, 1001376, 1106784, 1168272, 1314306, 1502064, 1752408, 2336544, 2628612, 3004128, 3504816, 5257224, 7009632, 10514448, 21028896]

約数ペア:

[(1, 21028896), (2, 10514448), (3, 7009632), (4, 5257224), (6, 3504816), (7, 3004128), (8, 2628612), (9, 2336544), (12, 1752408), (14, 1502064), (16, 1314306), (18, 1168272), (19, 1106784), (21, 1001376), (24, 876204), (27, 778848), (28, 751032), (32, 657153), (36, 584136), (38, 553392), (42, 500688), (48, 438102), (54, 389424), (56, 375516), (57, 368928), (61, 344736), (63, 333792), (72, 292068), (76, 276696), (81, 259616), (84, 250344), (96, 219051), (108, 194712), (112, 187758), (114, 184464), (122, 172368), (126, 166896), (133, 158112), (144, 146034), (152, 138348), (162, 129808), (168, 125172), (171, 122976), (183, 114912), (189, 111264), (216, 97356), (224, 93879), (228, 92232), (244, 86184), (252, 83448), (266, 79056), (288, 73017), (304, 69174), (324, 64904), (336, 62586), (342, 61488), (366, 57456), (378, 55632), (399, 52704), (427, 49248), (432, 48678), (456, 46116), (488, 43092), (504, 41724), (513, 40992), (532, 39528), (549, 38304), (567, 37088), (608, 34587), (648, 32452), (672, 31293), (684, 30744), (732, 28728), (756, 27816), (798, 26352), (854, 24624), (864, 24339), (912, 23058), (976, 21546), (1008, 20862), (1026, 20496), (1064, 19764), (1098, 19152), (1134, 18544), (1159, 18144), (1197, 17568), (1281, 16416), (1296, 16226), (1368, 15372), (1464, 14364), (1512, 13908), (1539, 13664), (1596, 13176), (1647, 12768), (1708, 12312), (1824, 11529), (1952, 10773), (2016, 10431), (2052, 10248), (2128, 9882), (2196, 9576), (2268, 9272), (2318, 9072), (2394, 8784), (2562, 8208), (2592, 8113), (2736, 7686), (2928, 7182), (3024, 6954), (3078, 6832), (3192, 6588), (3294, 6384), (3416, 6156), (3477, 6048), (3591, 5856), (3843, 5472), (4104, 5124), (4256, 4941), (4392, 4788), (4536, 4636)]