31431920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{30223}}^1$

素因数の和:30249

約数の個数: 40

約数和(自身を含む): 78703296

約数和(自身を除く): 47271376

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 30223, 60446, 120892, 151115, 241784, 302230, 392899, 483568, 604460, 785798, 1208920, 1571596, 1964495, 2417840, 3143192, 3928990, 6286384, 7857980, 15715960, 31431920]

約数ペア:

[(1, 31431920), (2, 15715960), (4, 7857980), (5, 6286384), (8, 3928990), (10, 3143192), (13, 2417840), (16, 1964495), (20, 1571596), (26, 1208920), (40, 785798), (52, 604460), (65, 483568), (80, 392899), (104, 302230), (130, 241784), (208, 151115), (260, 120892), (520, 60446), (1040, 30223)]