28340920

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{863}}^1$

素因数の和:1695

約数の個数: 32

約数和(自身を含む): 63918720

約数和(自身を除く): 35577800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 863, 1642, 1726, 3284, 3452, 4105, 4315, 6568, 6904, 8210, 8630, 16420, 17260, 32840, 34520, 708523, 1417046, 2834092, 3542615, 5668184, 7085230, 14170460, 28340920]

約数ペア:

[(1, 28340920), (2, 14170460), (4, 7085230), (5, 5668184), (8, 3542615), (10, 2834092), (20, 1417046), (40, 708523), (821, 34520), (863, 32840), (1642, 17260), (1726, 16420), (3284, 8630), (3452, 8210), (4105, 6904), (4315, 6568)]