20939268

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:409

約数の個数: 72

約数和(自身を含む): 57456000

約数和(自身を除く): 36516732

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 149, 196, 239, 294, 298, 447, 478, 588, 596, 717, 894, 956, 1043, 1434, 1673, 1788, 2086, 2868, 3129, 3346, 4172, 5019, 6258, 6692, 7301, 10038, 11711, 12516, 14602, 20076, 21903, 23422, 29204, 35133, 35611, 43806, 46844, 70266, 71222, 87612, 106833, 140532, 142444, 213666, 249277, 427332, 498554, 747831, 997108, 1495662, 1744939, 2991324, 3489878, 5234817, 6979756, 10469634, 20939268]

約数ペア:

[(1, 20939268), (2, 10469634), (3, 6979756), (4, 5234817), (6, 3489878), (7, 2991324), (12, 1744939), (14, 1495662), (21, 997108), (28, 747831), (42, 498554), (49, 427332), (84, 249277), (98, 213666), (147, 142444), (149, 140532), (196, 106833), (239, 87612), (294, 71222), (298, 70266), (447, 46844), (478, 43806), (588, 35611), (596, 35133), (717, 29204), (894, 23422), (956, 21903), (1043, 20076), (1434, 14602), (1673, 12516), (1788, 11711), (2086, 10038), (2868, 7301), (3129, 6692), (3346, 6258), (4172, 5019)]