640028207

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{30713}}^1$

素因数の和:30962

約数の個数: 16

約数和(自身を含む): 791192640

約数和(自身を除く): 151164433

約数列:

[1, 7, 13, 91, 229, 1603, 2977, 20839, 30713, 214991, 399269, 2794883, 7033277, 49232939, 91432601, 640028207]

約数ペア:

[(1, 640028207), (7, 91432601), (13, 49232939), (91, 7033277), (229, 2794883), (1603, 399269), (2977, 214991), (20839, 30713)]