31866440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 74511360

約数和(自身を除く): 42644920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 97, 172, 191, 194, 215, 344, 382, 388, 430, 485, 764, 776, 860, 955, 970, 1528, 1720, 1910, 1940, 3820, 3880, 4171, 7640, 8213, 8342, 16426, 16684, 18527, 20855, 32852, 33368, 37054, 41065, 41710, 65704, 74108, 82130, 83420, 92635, 148216, 164260, 166840, 185270, 328520, 370540, 741080, 796661, 1593322, 3186644, 3983305, 6373288, 7966610, 15933220, 31866440]

約数ペア:

[(1, 31866440), (2, 15933220), (4, 7966610), (5, 6373288), (8, 3983305), (10, 3186644), (20, 1593322), (40, 796661), (43, 741080), (86, 370540), (97, 328520), (172, 185270), (191, 166840), (194, 164260), (215, 148216), (344, 92635), (382, 83420), (388, 82130), (430, 74108), (485, 65704), (764, 41710), (776, 41065), (860, 37054), (955, 33368), (970, 32852), (1528, 20855), (1720, 18527), (1910, 16684), (1940, 16426), (3820, 8342), (3880, 8213), (4171, 7640)]