21321468

素因数分解:

$2^2\times 3^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 180

約数和(自身を含む): 69521760

約数和(自身を除く): 48200292

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 27, 28, 34, 36, 42, 49, 51, 54, 63, 68, 79, 81, 84, 98, 102, 108, 119, 126, 147, 153, 158, 162, 189, 196, 204, 237, 238, 252, 294, 306, 316, 324, 357, 378, 441, 459, 474, 476, 553, 567, 588, 612, 711, 714, 756, 833, 882, 918, 948, 1071, 1106, 1134, 1323, 1343, 1377, 1422, 1428, 1659, 1666, 1764, 1836, 2133, 2142, 2212, 2268, 2499, 2646, 2686, 2754, 2844, 3213, 3318, 3332, 3871, 3969, 4029, 4266, 4284, 4977, 4998, 5292, 5372, 5508, 6399, 6426, 6636, 7497, 7742, 7938, 8058, 8532, 9401, 9639, 9954, 9996, 11613, 12087, 12798, 12852, 14931, 14994, 15484, 15876, 16116, 18802, 19278, 19908, 22491, 23226, 24174, 25596, 28203, 29862, 29988, 34839, 36261, 37604, 38556, 44793, 44982, 46452, 48348, 56406, 59724, 65807, 67473, 69678, 72522, 84609, 89586, 89964, 104517, 108783, 112812, 131614, 134946, 139356, 145044, 169218, 179172, 197421, 209034, 217566, 253827, 263228, 269892, 313551, 338436, 394842, 418068, 435132, 507654, 592263, 627102, 761481, 789684, 1015308, 1184526, 1254204, 1522962, 1776789, 2369052, 3045924, 3553578, 5330367, 7107156, 10660734, 21321468]

約数ペア:

[(1, 21321468), (2, 10660734), (3, 7107156), (4, 5330367), (6, 3553578), (7, 3045924), (9, 2369052), (12, 1776789), (14, 1522962), (17, 1254204), (18, 1184526), (21, 1015308), (27, 789684), (28, 761481), (34, 627102), (36, 592263), (42, 507654), (49, 435132), (51, 418068), (54, 394842), (63, 338436), (68, 313551), (79, 269892), (81, 263228), (84, 253827), (98, 217566), (102, 209034), (108, 197421), (119, 179172), (126, 169218), (147, 145044), (153, 139356), (158, 134946), (162, 131614), (189, 112812), (196, 108783), (204, 104517), (237, 89964), (238, 89586), (252, 84609), (294, 72522), (306, 69678), (316, 67473), (324, 65807), (357, 59724), (378, 56406), (441, 48348), (459, 46452), (474, 44982), (476, 44793), (553, 38556), (567, 37604), (588, 36261), (612, 34839), (711, 29988), (714, 29862), (756, 28203), (833, 25596), (882, 24174), (918, 23226), (948, 22491), (1071, 19908), (1106, 19278), (1134, 18802), (1323, 16116), (1343, 15876), (1377, 15484), (1422, 14994), (1428, 14931), (1659, 12852), (1666, 12798), (1764, 12087), (1836, 11613), (2133, 9996), (2142, 9954), (2212, 9639), (2268, 9401), (2499, 8532), (2646, 8058), (2686, 7938), (2754, 7742), (2844, 7497), (3213, 6636), (3318, 6426), (3332, 6399), (3871, 5508), (3969, 5372), (4029, 5292), (4266, 4998), (4284, 4977)]