13988457

素因数分解:

$3^4\times 7^1\times {\mathrm{24671}}^1$

素因数の和:24690

約数の個数: 20

約数和(自身を含む): 23882496

約数和(自身を除く): 9894039

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 24671, 74013, 172697, 222039, 518091, 666117, 1554273, 1998351, 4662819, 13988457]

約数ペア:

[(1, 13988457), (3, 4662819), (7, 1998351), (9, 1554273), (21, 666117), (27, 518091), (63, 222039), (81, 172697), (189, 74013), (567, 24671)]