161657020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{1373}}^1$

素因数の和:1447

約数の個数: 72

約数和(自身を含む): 402109344

約数和(自身を除く): 240452324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 841, 1015, 1373, 1682, 2030, 2746, 3364, 4060, 4205, 5492, 5887, 6865, 8410, 9611, 11774, 13730, 16820, 19222, 23548, 27460, 29435, 38444, 39817, 48055, 58870, 79634, 96110, 117740, 159268, 192220, 199085, 278719, 398170, 557438, 796340, 1114876, 1154693, 1393595, 2309386, 2787190, 4618772, 5574380, 5773465, 8082851, 11546930, 16165702, 23093860, 32331404, 40414255, 80828510, 161657020]

約数ペア:

[(1, 161657020), (2, 80828510), (4, 40414255), (5, 32331404), (7, 23093860), (10, 16165702), (14, 11546930), (20, 8082851), (28, 5773465), (29, 5574380), (35, 4618772), (58, 2787190), (70, 2309386), (116, 1393595), (140, 1154693), (145, 1114876), (203, 796340), (290, 557438), (406, 398170), (580, 278719), (812, 199085), (841, 192220), (1015, 159268), (1373, 117740), (1682, 96110), (2030, 79634), (2746, 58870), (3364, 48055), (4060, 39817), (4205, 38444), (5492, 29435), (5887, 27460), (6865, 23548), (8410, 19222), (9611, 16820), (11774, 13730)]