31260140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 67888128

約数和(自身を除く): 36627988

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 163, 172, 215, 223, 326, 430, 446, 652, 815, 860, 892, 1115, 1630, 2230, 3260, 4460, 7009, 9589, 14018, 19178, 28036, 35045, 36349, 38356, 47945, 70090, 72698, 95890, 140180, 145396, 181745, 191780, 363490, 726980, 1563007, 3126014, 6252028, 7815035, 15630070, 31260140]

約数ペア:

[(1, 31260140), (2, 15630070), (4, 7815035), (5, 6252028), (10, 3126014), (20, 1563007), (43, 726980), (86, 363490), (163, 191780), (172, 181745), (215, 145396), (223, 140180), (326, 95890), (430, 72698), (446, 70090), (652, 47945), (815, 38356), (860, 36349), (892, 35045), (1115, 28036), (1630, 19178), (2230, 14018), (3260, 9589), (4460, 7009)]