217820259

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{24671}}^1$

素因数の和:24792

約数の個数: 20

約数和(自身を含む): 328384320

約数和(自身を除く): 110564061

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 8829, 24671, 74013, 222039, 666117, 1998351, 2689139, 8067417, 24202251, 72606753, 217820259]

約数ペア:

[(1, 217820259), (3, 72606753), (9, 24202251), (27, 8067417), (81, 2689139), (109, 1998351), (327, 666117), (981, 222039), (2943, 74013), (8829, 24671)]