21015195

素因数分解:

$3^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3529}}^1$

素因数の和:3934

約数の個数: 16

約数和(自身を含む): 33718560

約数和(自身を除く): 12703365

約数列:

[1, 3, 5, 15, 397, 1191, 1985, 3529, 5955, 10587, 17645, 52935, 1401013, 4203039, 7005065, 21015195]

約数ペア:

[(1, 21015195), (3, 7005065), (5, 4203039), (15, 1401013), (397, 52935), (1191, 17645), (1985, 10587), (3529, 5955)]