31290920

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1867}}^1$

素因数の和:2297

約数の個数: 32

約数和(自身を含む): 70610400

約数和(自身を除く): 39319480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1676, 1867, 2095, 3352, 3734, 4190, 7468, 8380, 9335, 14936, 16760, 18670, 37340, 74680, 782273, 1564546, 3129092, 3911365, 6258184, 7822730, 15645460, 31290920]

約数ペア:

[(1, 31290920), (2, 15645460), (4, 7822730), (5, 6258184), (8, 3911365), (10, 3129092), (20, 1564546), (40, 782273), (419, 74680), (838, 37340), (1676, 18670), (1867, 16760), (2095, 14936), (3352, 9335), (3734, 8380), (4190, 7468)]