31681540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:277

約数の個数: 96

約数和(自身を含む): 79035264

約数和(自身を除く): 47353724

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 43, 44, 55, 68, 85, 86, 110, 170, 172, 187, 197, 215, 220, 340, 374, 394, 430, 473, 731, 748, 788, 860, 935, 946, 985, 1462, 1870, 1892, 1970, 2167, 2365, 2924, 3349, 3655, 3740, 3940, 4334, 4730, 6698, 7310, 8041, 8471, 8668, 9460, 10835, 13396, 14620, 16082, 16745, 16942, 21670, 32164, 33490, 33884, 36839, 40205, 42355, 43340, 66980, 73678, 80410, 84710, 93181, 144007, 147356, 160820, 169420, 184195, 186362, 288014, 368390, 372724, 465905, 576028, 720035, 736780, 931810, 1440070, 1584077, 1863620, 2880140, 3168154, 6336308, 7920385, 15840770, 31681540]

約数ペア:

[(1, 31681540), (2, 15840770), (4, 7920385), (5, 6336308), (10, 3168154), (11, 2880140), (17, 1863620), (20, 1584077), (22, 1440070), (34, 931810), (43, 736780), (44, 720035), (55, 576028), (68, 465905), (85, 372724), (86, 368390), (110, 288014), (170, 186362), (172, 184195), (187, 169420), (197, 160820), (215, 147356), (220, 144007), (340, 93181), (374, 84710), (394, 80410), (430, 73678), (473, 66980), (731, 43340), (748, 42355), (788, 40205), (860, 36839), (935, 33884), (946, 33490), (985, 32164), (1462, 21670), (1870, 16942), (1892, 16745), (1970, 16082), (2167, 14620), (2365, 13396), (2924, 10835), (3349, 9460), (3655, 8668), (3740, 8471), (3940, 8041), (4334, 7310), (4730, 6698)]