21057764

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 28729372

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 41, 52, 68, 82, 83, 91, 119, 164, 166, 182, 221, 238, 287, 332, 364, 442, 476, 533, 574, 581, 697, 884, 1066, 1079, 1148, 1162, 1394, 1411, 1547, 2132, 2158, 2324, 2788, 2822, 3094, 3403, 3731, 4316, 4879, 5644, 6188, 6806, 7462, 7553, 9061, 9758, 9877, 13612, 14924, 15106, 18122, 18343, 19516, 19754, 23821, 30212, 36244, 36686, 39508, 44239, 47642, 57851, 63427, 73372, 88478, 95284, 115702, 126854, 128401, 176956, 231404, 253708, 256802, 309673, 404957, 513604, 619346, 752063, 809914, 1238692, 1504126, 1619828, 3008252, 5264441, 10528882, 21057764]

約数ペア:

[(1, 21057764), (2, 10528882), (4, 5264441), (7, 3008252), (13, 1619828), (14, 1504126), (17, 1238692), (26, 809914), (28, 752063), (34, 619346), (41, 513604), (52, 404957), (68, 309673), (82, 256802), (83, 253708), (91, 231404), (119, 176956), (164, 128401), (166, 126854), (182, 115702), (221, 95284), (238, 88478), (287, 73372), (332, 63427), (364, 57851), (442, 47642), (476, 44239), (533, 39508), (574, 36686), (581, 36244), (697, 30212), (884, 23821), (1066, 19754), (1079, 19516), (1148, 18343), (1162, 18122), (1394, 15106), (1411, 14924), (1547, 13612), (2132, 9877), (2158, 9758), (2324, 9061), (2788, 7553), (2822, 7462), (3094, 6806), (3403, 6188), (3731, 5644), (4316, 4879)]