21207004

素因数分解:

$2^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:108

約数の個数: 96

約数和(自身を含む): 49392000

約数和(自身を除く): 28184996

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 29, 41, 49, 52, 58, 82, 91, 98, 116, 164, 182, 196, 203, 287, 343, 364, 377, 406, 533, 574, 637, 686, 754, 812, 1066, 1148, 1189, 1274, 1372, 1421, 1508, 2009, 2132, 2378, 2548, 2639, 2842, 3731, 4018, 4459, 4756, 5278, 5684, 7462, 8036, 8323, 8918, 9947, 10556, 14063, 14924, 15457, 16646, 17836, 18473, 19894, 26117, 28126, 30914, 33292, 36946, 39788, 52234, 56252, 58261, 61828, 73892, 104468, 108199, 116522, 129311, 182819, 216398, 233044, 258622, 365638, 407827, 432796, 517244, 731276, 757393, 815654, 1514786, 1631308, 3029572, 5301751, 10603502, 21207004]

約数ペア:

[(1, 21207004), (2, 10603502), (4, 5301751), (7, 3029572), (13, 1631308), (14, 1514786), (26, 815654), (28, 757393), (29, 731276), (41, 517244), (49, 432796), (52, 407827), (58, 365638), (82, 258622), (91, 233044), (98, 216398), (116, 182819), (164, 129311), (182, 116522), (196, 108199), (203, 104468), (287, 73892), (343, 61828), (364, 58261), (377, 56252), (406, 52234), (533, 39788), (574, 36946), (637, 33292), (686, 30914), (754, 28126), (812, 26117), (1066, 19894), (1148, 18473), (1189, 17836), (1274, 16646), (1372, 15457), (1421, 14924), (1508, 14063), (2009, 10556), (2132, 9947), (2378, 8918), (2548, 8323), (2639, 8036), (2842, 7462), (3731, 5684), (4018, 5278), (4459, 4756)]