21749901

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1\times {\mathrm{773}}^1$

素因数の和:972

約数の個数: 16

約数和(自身を含む): 29647296

約数和(自身を除く): 7897395

約数列:

[1, 3, 83, 113, 249, 339, 773, 2319, 9379, 28137, 64159, 87349, 192477, 262047, 7249967, 21749901]

約数ペア:

[(1, 21749901), (3, 7249967), (83, 262047), (113, 192477), (249, 87349), (339, 64159), (773, 28137), (2319, 9379)]