31380531

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16421}}^1$

素因数の和:16451

約数の個数: 24

約数和(自身を含む): 52419024

約数和(自身を除く): 21038493

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 16421, 49263, 114947, 213473, 344841, 640419, 804629, 1494311, 2413887, 4482933, 10460177, 31380531]

約数ペア:

[(1, 31380531), (3, 10460177), (7, 4482933), (13, 2413887), (21, 1494311), (39, 804629), (49, 640419), (91, 344841), (147, 213473), (273, 114947), (637, 49263), (1911, 16421)]