81114740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19979}}^1$

素因数の和:20024

約数の個数: 48

約数和(自身を含む): 201398400

約数和(自身を除く): 120283660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 19979, 39958, 79916, 99895, 139853, 199790, 279706, 399580, 559412, 579391, 699265, 1158782, 1398530, 2317564, 2797060, 2896955, 4055737, 5793910, 8111474, 11587820, 16222948, 20278685, 40557370, 81114740]

約数ペア:

[(1, 81114740), (2, 40557370), (4, 20278685), (5, 16222948), (7, 11587820), (10, 8111474), (14, 5793910), (20, 4055737), (28, 2896955), (29, 2797060), (35, 2317564), (58, 1398530), (70, 1158782), (116, 699265), (140, 579391), (145, 559412), (203, 399580), (290, 279706), (406, 199790), (580, 139853), (812, 99895), (1015, 79916), (2030, 39958), (4060, 19979)]