21315795

素因数分解:

$3^1\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1613}}^1$

素因数の和:2502

約数の個数: 16

約数和(自身を含む): 34165152

約数和(自身を除く): 12849357

約数列:

[1, 3, 5, 15, 881, 1613, 2643, 4405, 4839, 8065, 13215, 24195, 1421053, 4263159, 7105265, 21315795]

約数ペア:

[(1, 21315795), (3, 7105265), (5, 4263159), (15, 1421053), (881, 24195), (1613, 13215), (2643, 8065), (4405, 4839)]