259632920

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{39821}}^1$

素因数の和:39995

約数の個数: 32

約数和(自身を含む): 587772720

約数和(自身を除く): 328139800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 39821, 79642, 159284, 199105, 318568, 398210, 796420, 1592840, 6490823, 12981646, 25963292, 32454115, 51926584, 64908230, 129816460, 259632920]

約数ペア:

[(1, 259632920), (2, 129816460), (4, 64908230), (5, 51926584), (8, 32454115), (10, 25963292), (20, 12981646), (40, 6490823), (163, 1592840), (326, 796420), (652, 398210), (815, 318568), (1304, 199105), (1630, 159284), (3260, 79642), (6520, 39821)]