20209085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 7369795

約数列:

[1, 5, 13, 29, 65, 71, 145, 151, 355, 377, 755, 923, 1885, 1963, 2059, 4379, 4615, 9815, 10295, 10721, 21895, 26767, 53605, 56927, 133835, 139373, 284635, 310909, 696865, 1554545, 4041817, 20209085]

約数ペア:

[(1, 20209085), (5, 4041817), (13, 1554545), (29, 696865), (65, 310909), (71, 284635), (145, 139373), (151, 133835), (355, 56927), (377, 53605), (755, 26767), (923, 21895), (1885, 10721), (1963, 10295), (2059, 9815), (4379, 4615)]