31229840

素因数分解:

$2^4\times 5^1\times {\mathrm{390373}}^1$

素因数の和:390386

約数の個数: 20

約数和(自身を含む): 72609564

約数和(自身を除く): 41379724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390373, 780746, 1561492, 1951865, 3122984, 3903730, 6245968, 7807460, 15614920, 31229840]

約数ペア:

[(1, 31229840), (2, 15614920), (4, 7807460), (5, 6245968), (8, 3903730), (10, 3122984), (16, 1951865), (20, 1561492), (40, 780746), (80, 390373)]