13478840

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1063}}^1$

素因数の和:1391

約数の個数: 32

約数和(自身を含む): 30451680

約数和(自身を除く): 16972840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1063, 1268, 1585, 2126, 2536, 3170, 4252, 5315, 6340, 8504, 10630, 12680, 21260, 42520, 336971, 673942, 1347884, 1684855, 2695768, 3369710, 6739420, 13478840]

約数ペア:

[(1, 13478840), (2, 6739420), (4, 3369710), (5, 2695768), (8, 1684855), (10, 1347884), (20, 673942), (40, 336971), (317, 42520), (634, 21260), (1063, 12680), (1268, 10630), (1585, 8504), (2126, 6340), (2536, 5315), (3170, 4252)]