21480405

素因数分解:

$3^1\times 5^1\times {\mathrm{541}}^1\times {\mathrm{2647}}^1$

素因数の和:3196

約数の個数: 16

約数和(自身を含む): 34445184

約数和(自身を除く): 12964779

約数列:

[1, 3, 5, 15, 541, 1623, 2647, 2705, 7941, 8115, 13235, 39705, 1432027, 4296081, 7160135, 21480405]

約数ペア:

[(1, 21480405), (3, 7160135), (5, 4296081), (15, 1432027), (541, 39705), (1623, 13235), (2647, 8115), (2705, 7941)]