71351620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{509}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 154566720

約数和(自身を除く): 83215100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 163, 172, 215, 326, 430, 509, 652, 815, 860, 1018, 1630, 2036, 2545, 3260, 5090, 7009, 10180, 14018, 21887, 28036, 35045, 43774, 70090, 82967, 87548, 109435, 140180, 165934, 218870, 331868, 414835, 437740, 829670, 1659340, 3567581, 7135162, 14270324, 17837905, 35675810, 71351620]

約数ペア:

[(1, 71351620), (2, 35675810), (4, 17837905), (5, 14270324), (10, 7135162), (20, 3567581), (43, 1659340), (86, 829670), (163, 437740), (172, 414835), (215, 331868), (326, 218870), (430, 165934), (509, 140180), (652, 109435), (815, 87548), (860, 82967), (1018, 70090), (1630, 43774), (2036, 35045), (2545, 28036), (3260, 21887), (5090, 14018), (7009, 10180)]