81218640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{338411}}^1$

素因数の和:338427

約数の個数: 40

約数和(自身を含む): 251778528

約数和(自身を除く): 170559888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 338411, 676822, 1015233, 1353644, 1692055, 2030466, 2707288, 3384110, 4060932, 5076165, 5414576, 6768220, 8121864, 10152330, 13536440, 16243728, 20304660, 27072880, 40609320, 81218640]

約数ペア:

[(1, 81218640), (2, 40609320), (3, 27072880), (4, 20304660), (5, 16243728), (6, 13536440), (8, 10152330), (10, 8121864), (12, 6768220), (15, 5414576), (16, 5076165), (20, 4060932), (24, 3384110), (30, 2707288), (40, 2030466), (48, 1692055), (60, 1353644), (80, 1015233), (120, 676822), (240, 338411)]