20276945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 28062720

約数和(自身を除く): 7785775

約数列:

[1, 5, 13, 29, 31, 65, 145, 155, 347, 377, 403, 899, 1735, 1885, 2015, 4495, 4511, 10063, 10757, 11687, 22555, 50315, 53785, 58435, 130819, 139841, 311953, 654095, 699205, 1559765, 4055389, 20276945]

約数ペア:

[(1, 20276945), (5, 4055389), (13, 1559765), (29, 699205), (31, 654095), (65, 311953), (145, 139841), (155, 130819), (347, 58435), (377, 53785), (403, 50315), (899, 22555), (1735, 11687), (1885, 10757), (2015, 10063), (4495, 4511)]