31228720

素因数分解:

$2^4\times 5^1\times {\mathrm{390359}}^1$

素因数の和:390372

約数の個数: 20

約数和(自身を含む): 72606960

約数和(自身を除く): 41378240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390359, 780718, 1561436, 1951795, 3122872, 3903590, 6245744, 7807180, 15614360, 31228720]

約数ペア:

[(1, 31228720), (2, 15614360), (4, 7807180), (5, 6245744), (8, 3903590), (10, 3122872), (16, 1951795), (20, 1561436), (40, 780718), (80, 390359)]