20045620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1093}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 48521088

約数和(自身を除く): 28475468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1093, 1310, 1834, 2186, 2620, 3668, 4372, 4585, 5465, 7651, 9170, 10930, 15302, 18340, 21860, 30604, 38255, 76510, 143183, 153020, 286366, 572732, 715915, 1002281, 1431830, 2004562, 2863660, 4009124, 5011405, 10022810, 20045620]

約数ペア:

[(1, 20045620), (2, 10022810), (4, 5011405), (5, 4009124), (7, 2863660), (10, 2004562), (14, 1431830), (20, 1002281), (28, 715915), (35, 572732), (70, 286366), (131, 153020), (140, 143183), (262, 76510), (524, 38255), (655, 30604), (917, 21860), (1093, 18340), (1310, 15302), (1834, 10930), (2186, 9170), (2620, 7651), (3668, 5465), (4372, 4585)]