17984920

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{863}}^1$

素因数の和:1395

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 22605800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 863, 1042, 1726, 2084, 2605, 3452, 4168, 4315, 5210, 6904, 8630, 10420, 17260, 20840, 34520, 449623, 899246, 1798492, 2248115, 3596984, 4496230, 8992460, 17984920]

約数ペア:

[(1, 17984920), (2, 8992460), (4, 4496230), (5, 3596984), (8, 2248115), (10, 1798492), (20, 899246), (40, 449623), (521, 34520), (863, 20840), (1042, 17260), (1726, 10420), (2084, 8630), (2605, 6904), (3452, 5210), (4168, 4315)]