20378735

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{569}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 28728000

約数和(自身を除く): 8349265

約数列:

[1, 5, 13, 19, 29, 65, 95, 145, 247, 377, 551, 569, 1235, 1885, 2755, 2845, 7163, 7397, 10811, 16501, 35815, 36985, 54055, 82505, 140543, 214513, 313519, 702715, 1072565, 1567595, 4075747, 20378735]

約数ペア:

[(1, 20378735), (5, 4075747), (13, 1567595), (19, 1072565), (29, 702715), (65, 313519), (95, 214513), (145, 140543), (247, 82505), (377, 54055), (551, 36985), (569, 35815), (1235, 16501), (1885, 10811), (2755, 7397), (2845, 7163)]