25390209

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{21001}}^1$

素因数の和:21048

約数の個数: 16

約数和(自身を含む): 37635584

約数和(自身を除く): 12245375

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 21001, 63003, 273013, 651031, 819039, 1953093, 8463403, 25390209]

約数ペア:

[(1, 25390209), (3, 8463403), (13, 1953093), (31, 819039), (39, 651031), (93, 273013), (403, 63003), (1209, 21001)]