257687996

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{409}}^1\times {\mathrm{5081}}^1$

素因数の和:5525

約数の個数: 24

約数和(自身を含む): 466730880

約数和(自身を除く): 209042884

約数列:

[1, 2, 4, 31, 62, 124, 409, 818, 1636, 5081, 10162, 12679, 20324, 25358, 50716, 157511, 315022, 630044, 2078129, 4156258, 8312516, 64421999, 128843998, 257687996]

約数ペア:

[(1, 257687996), (2, 128843998), (4, 64421999), (31, 8312516), (62, 4156258), (124, 2078129), (409, 630044), (818, 315022), (1636, 157511), (5081, 50716), (10162, 25358), (12679, 20324)]