21266295

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32971}}^1$

素因数の和:33022

約数の個数: 16

約数和(自身を含む): 34818432

約数和(自身を除く): 13552137

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32971, 98913, 164855, 494565, 1417753, 4253259, 7088765, 21266295]

約数ペア:

[(1, 21266295), (3, 7088765), (5, 4253259), (15, 1417753), (43, 494565), (129, 164855), (215, 98913), (645, 32971)]