21123620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150883}}^1$

素因数の和:150899

約数の個数: 24

約数和(自身を含む): 50697024

約数和(自身を除く): 29573404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150883, 301766, 603532, 754415, 1056181, 1508830, 2112362, 3017660, 4224724, 5280905, 10561810, 21123620]

約数ペア:

[(1, 21123620), (2, 10561810), (4, 5280905), (5, 4224724), (7, 3017660), (10, 2112362), (14, 1508830), (20, 1056181), (28, 754415), (35, 603532), (70, 301766), (140, 150883)]