20179523

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 25663680

約数和(自身を除く): 5484157

約数列:

[1, 7, 13, 49, 79, 91, 401, 553, 637, 1027, 2807, 3871, 5213, 7189, 19649, 31679, 36491, 50323, 221753, 255437, 411827, 1552271, 2882789, 20179523]

約数ペア:

[(1, 20179523), (7, 2882789), (13, 1552271), (49, 411827), (79, 255437), (91, 221753), (401, 50323), (553, 36491), (637, 31679), (1027, 19649), (2807, 7189), (3871, 5213)]