31338280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{7757}}^1$

素因数の和:7869

約数の個数: 32

約数和(自身を含む): 71218440

約数和(自身を除く): 39880160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 7757, 15514, 31028, 38785, 62056, 77570, 155140, 310280, 783457, 1566914, 3133828, 3917285, 6267656, 7834570, 15669140, 31338280]

約数ペア:

[(1, 31338280), (2, 15669140), (4, 7834570), (5, 6267656), (8, 3917285), (10, 3133828), (20, 1566914), (40, 783457), (101, 310280), (202, 155140), (404, 77570), (505, 62056), (808, 38785), (1010, 31028), (2020, 15514), (4040, 7757)]