259393491

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{216703}}^1$

素因数の和:216735

約数の個数: 24

約数和(自身を含む): 450744320

約数和(自身を除く): 191350829

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 216703, 650109, 1516921, 1950327, 4117357, 4550763, 12352071, 13652289, 28821499, 37056213, 86464497, 259393491]

約数ペア:

[(1, 259393491), (3, 86464497), (7, 37056213), (9, 28821499), (19, 13652289), (21, 12352071), (57, 4550763), (63, 4117357), (133, 1950327), (171, 1516921), (399, 650109), (1197, 216703)]