21619585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{2539}}^1$

素因数の和:2688

約数の個数: 16

約数和(自身を含む): 28163520

約数和(自身を除く): 6543935

約数列:

[1, 5, 13, 65, 131, 655, 1703, 2539, 8515, 12695, 33007, 165035, 332609, 1663045, 4323917, 21619585]

約数ペア:

[(1, 21619585), (5, 4323917), (13, 1663045), (65, 332609), (131, 165035), (655, 33007), (1703, 12695), (2539, 8515)]