21568430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{661}}^1$

素因数の和:932

約数の個数: 32

約数和(自身を含む): 42039648

約数和(自身を除く): 20471218

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 251, 502, 661, 1255, 1322, 2510, 3263, 3305, 6526, 6610, 8593, 16315, 17186, 32630, 42965, 85930, 165911, 331822, 829555, 1659110, 2156843, 4313686, 10784215, 21568430]

約数ペア:

[(1, 21568430), (2, 10784215), (5, 4313686), (10, 2156843), (13, 1659110), (26, 829555), (65, 331822), (130, 165911), (251, 85930), (502, 42965), (661, 32630), (1255, 17186), (1322, 16315), (2510, 8593), (3263, 6610), (3305, 6526)]