20147421

素因数分解:

$3^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{2749}}^1$

素因数の和:3108

約数の個数: 16

約数和(自身を含む): 30800000

約数和(自身を除く): 10652579

約数列:

[1, 3, 7, 21, 349, 1047, 2443, 2749, 7329, 8247, 19243, 57729, 959401, 2878203, 6715807, 20147421]

約数ペア:

[(1, 20147421), (3, 6715807), (7, 2878203), (21, 959401), (349, 57729), (1047, 19243), (2443, 8247), (2749, 7329)]