81716245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 112250880

約数和(自身を除く): 30534635

約数列:

[1, 5, 13, 19, 65, 95, 127, 247, 521, 635, 1235, 1651, 2413, 2605, 6773, 8255, 9899, 12065, 31369, 33865, 49495, 66167, 128687, 156845, 330835, 643435, 860171, 1257173, 4300855, 6285865, 16343249, 81716245]

約数ペア:

[(1, 81716245), (5, 16343249), (13, 6285865), (19, 4300855), (65, 1257173), (95, 860171), (127, 643435), (247, 330835), (521, 156845), (635, 128687), (1235, 66167), (1651, 49495), (2413, 33865), (2605, 31369), (6773, 12065), (8255, 9899)]