21542015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{233}}^1$

素因数の和:331

約数の個数: 24

約数和(自身を含む): 29029104

約数和(自身を除く): 7487089

約数列:

[1, 5, 11, 41, 55, 205, 233, 451, 1165, 1681, 2255, 2563, 8405, 9553, 12815, 18491, 47765, 92455, 105083, 391673, 525415, 1958365, 4308403, 21542015]

約数ペア:

[(1, 21542015), (5, 4308403), (11, 1958365), (41, 525415), (55, 391673), (205, 105083), (233, 92455), (451, 47765), (1165, 18491), (1681, 12815), (2255, 9553), (2563, 8405)]