81299180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{140171}}^1$

素因数の和:140209

約数の個数: 24

約数和(自身を含む): 176616720

約数和(自身を除く): 95317540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 140171, 280342, 560684, 700855, 1401710, 2803420, 4064959, 8129918, 16259836, 20324795, 40649590, 81299180]

約数ペア:

[(1, 81299180), (2, 40649590), (4, 20324795), (5, 16259836), (10, 8129918), (20, 4064959), (29, 2803420), (58, 1401710), (116, 700855), (145, 560684), (290, 280342), (580, 140171)]