21618905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{241}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 32617728

約数和(自身を除く): 10998823

約数列:

[1, 5, 7, 11, 35, 55, 77, 233, 241, 385, 1165, 1205, 1631, 1687, 2563, 2651, 8155, 8435, 12815, 13255, 17941, 18557, 56153, 89705, 92785, 280765, 393071, 617683, 1965355, 3088415, 4323781, 21618905]

約数ペア:

[(1, 21618905), (5, 4323781), (7, 3088415), (11, 1965355), (35, 617683), (55, 393071), (77, 280765), (233, 92785), (241, 89705), (385, 56153), (1165, 18557), (1205, 17941), (1631, 13255), (1687, 12815), (2563, 8435), (2651, 8155)]