20858475

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 38104704

約数和(自身を除く): 17246229

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 131, 165, 193, 275, 393, 579, 655, 825, 965, 1441, 1965, 2123, 2895, 3275, 4323, 4825, 6369, 7205, 9825, 10615, 14475, 21615, 25283, 31845, 36025, 53075, 75849, 108075, 126415, 159225, 278113, 379245, 632075, 834339, 1390565, 1896225, 4171695, 6952825, 20858475]

約数ペア:

[(1, 20858475), (3, 6952825), (5, 4171695), (11, 1896225), (15, 1390565), (25, 834339), (33, 632075), (55, 379245), (75, 278113), (131, 159225), (165, 126415), (193, 108075), (275, 75849), (393, 53075), (579, 36025), (655, 31845), (825, 25283), (965, 21615), (1441, 14475), (1965, 10615), (2123, 9825), (2895, 7205), (3275, 6369), (4323, 4825)]