261952028

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{387503}}^1$

素因数の和:387533

約数の個数: 18

約数和(自身を含む): 496392624

約数和(自身を除く): 234440596

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 387503, 775006, 1550012, 5037539, 10075078, 20150156, 65488007, 130976014, 261952028]

約数ペア:

[(1, 261952028), (2, 130976014), (4, 65488007), (13, 20150156), (26, 10075078), (52, 5037539), (169, 1550012), (338, 775006), (676, 387503)]