21569019

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{773}}^1$

素因数の和:978

約数の個数: 16

約数和(自身を含む): 29424384

約数和(自身を除く): 7855365

約数列:

[1, 3, 71, 131, 213, 393, 773, 2319, 9301, 27903, 54883, 101263, 164649, 303789, 7189673, 21569019]

約数ペア:

[(1, 21569019), (3, 7189673), (71, 303789), (131, 164649), (213, 101263), (393, 54883), (773, 27903), (2319, 9301)]