81200015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1777}}^1$

素因数の和:1851

約数の個数: 32

約数和(自身を含む): 113507520

約数和(自身を除く): 32307505

約数列:

[1, 5, 13, 19, 37, 65, 95, 185, 247, 481, 703, 1235, 1777, 2405, 3515, 8885, 9139, 23101, 33763, 45695, 65749, 115505, 168815, 328745, 438919, 854737, 1249231, 2194595, 4273685, 6246155, 16240003, 81200015]

約数ペア:

[(1, 81200015), (5, 16240003), (13, 6246155), (19, 4273685), (37, 2194595), (65, 1249231), (95, 854737), (185, 438919), (247, 328745), (481, 168815), (703, 115505), (1235, 65749), (1777, 45695), (2405, 33763), (3515, 23101), (8885, 9139)]