21982605

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{31181}}^1$

素因数の和:31236

約数の個数: 16

約数和(自身を含む): 35921664

約数和(自身を除く): 13939059

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 31181, 93543, 155905, 467715, 1465507, 4396521, 7327535, 21982605]

約数ペア:

[(1, 21982605), (3, 7327535), (5, 4396521), (15, 1465507), (47, 467715), (141, 155905), (235, 93543), (705, 31181)]