215525840

素因数分解:

$2^4\times 5^1\times {\mathrm{1213}}^1\times {\mathrm{2221}}^1$

素因数の和:3447

約数の個数: 40

約数和(自身を含む): 501736488

約数和(自身を除く): 286210648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1213, 2221, 2426, 4442, 4852, 6065, 8884, 9704, 11105, 12130, 17768, 19408, 22210, 24260, 35536, 44420, 48520, 88840, 97040, 177680, 2694073, 5388146, 10776292, 13470365, 21552584, 26940730, 43105168, 53881460, 107762920, 215525840]

約数ペア:

[(1, 215525840), (2, 107762920), (4, 53881460), (5, 43105168), (8, 26940730), (10, 21552584), (16, 13470365), (20, 10776292), (40, 5388146), (80, 2694073), (1213, 177680), (2221, 97040), (2426, 88840), (4442, 48520), (4852, 44420), (6065, 35536), (8884, 24260), (9704, 22210), (11105, 19408), (12130, 17768)]