21618155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{3229}}^1$

素因数の和:3350

約数の個数: 16

約数和(自身を含む): 28217280

約数和(自身を除く): 6599125

約数列:

[1, 5, 13, 65, 103, 515, 1339, 3229, 6695, 16145, 41977, 209885, 332587, 1662935, 4323631, 21618155]

約数ペア:

[(1, 21618155), (5, 4323631), (13, 1662935), (65, 332587), (103, 209885), (515, 41977), (1339, 16145), (3229, 6695)]