21000773339

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{2536019}}^1$

素因数の和:2536059

約数の個数: 18

約数和(自身を含む): 26453224620

約数和(自身を除く): 5452451281

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 8281, 2536019, 17752133, 32968247, 124264931, 230777729, 428587211, 1615444103, 3000110477, 21000773339]

約数ペア:

[(1, 21000773339), (7, 3000110477), (13, 1615444103), (49, 428587211), (91, 230777729), (169, 124264931), (637, 32968247), (1183, 17752133), (8281, 2536019)]