20178880085

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2179}}^1\times {\mathrm{20353}}^1$

素因数の和:22557

約数の個数: 32

約数和(自身を含む): 29817795840

約数和(自身を除く): 9638915755

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 2179, 10895, 15253, 20353, 28327, 76265, 101765, 141635, 142471, 198289, 264589, 712355, 991445, 1322945, 1852123, 9260615, 44349187, 221745935, 310444309, 576539431, 1552221545, 2882697155, 4035776017, 20178880085]

約数ペア:

[(1, 20178880085), (5, 4035776017), (7, 2882697155), (13, 1552221545), (35, 576539431), (65, 310444309), (91, 221745935), (455, 44349187), (2179, 9260615), (10895, 1852123), (15253, 1322945), (20353, 991445), (28327, 712355), (76265, 264589), (101765, 198289), (141635, 142471)]