21195830

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{397}}^1$

素因数の和:704

約数の個数: 32

約数和(自身を含む): 40404960

約数和(自身を除く): 19209130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 281, 397, 562, 794, 1405, 1985, 2810, 3970, 5339, 7543, 10678, 15086, 26695, 37715, 53390, 75430, 111557, 223114, 557785, 1115570, 2119583, 4239166, 10597915, 21195830]

約数ペア:

[(1, 21195830), (2, 10597915), (5, 4239166), (10, 2119583), (19, 1115570), (38, 557785), (95, 223114), (190, 111557), (281, 75430), (397, 53390), (562, 37715), (794, 26695), (1405, 15086), (1985, 10678), (2810, 7543), (3970, 5339)]