21720295

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{1039}}^1$

素因数の和:1194

約数の個数: 16

約数和(自身を含む): 27031680

約数和(自身を除く): 5311385

約数列:

[1, 5, 37, 113, 185, 565, 1039, 4181, 5195, 20905, 38443, 117407, 192215, 587035, 4344059, 21720295]

約数ペア:

[(1, 21720295), (5, 4344059), (37, 587035), (113, 192215), (185, 117407), (565, 38443), (1039, 20905), (4181, 5195)]