15889840

素因数分解:

$2^4\times 5^1\times {\mathrm{198623}}^1$

素因数の和:198636

約数の個数: 20

約数和(自身を含む): 36944064

約数和(自身を除く): 21054224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198623, 397246, 794492, 993115, 1588984, 1986230, 3177968, 3972460, 7944920, 15889840]

約数ペア:

[(1, 15889840), (2, 7944920), (4, 3972460), (5, 3177968), (8, 1986230), (10, 1588984), (16, 993115), (20, 794492), (40, 397246), (80, 198623)]