18159921

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{577}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 28402920

約数和(自身を除く): 10242999

約数列:

[1, 3, 9, 13, 39, 117, 269, 577, 807, 1731, 2421, 3497, 5193, 7501, 10491, 22503, 31473, 67509, 155213, 465639, 1396917, 2017769, 6053307, 18159921]

約数ペア:

[(1, 18159921), (3, 6053307), (9, 2017769), (13, 1396917), (39, 465639), (117, 155213), (269, 67509), (577, 31473), (807, 22503), (1731, 10491), (2421, 7501), (3497, 5193)]