21025605

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{20921}}^1$

素因数の和:20996

約数の個数: 16

約数和(自身を含む): 34144704

約数和(自身を除く): 13119099

約数列:

[1, 3, 5, 15, 67, 201, 335, 1005, 20921, 62763, 104605, 313815, 1401707, 4205121, 7008535, 21025605]

約数ペア:

[(1, 21025605), (3, 7008535), (5, 4205121), (15, 1401707), (67, 313815), (201, 104605), (335, 62763), (1005, 20921)]