20197528605

素因数分解:

$3^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{77801}}^1$

素因数の和:78459

約数の個数: 40

約数和(自身を含む): 36262889784

約数和(自身を除く): 16065361179

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 641, 1923, 3205, 5769, 9615, 17307, 28845, 51921, 77801, 86535, 233403, 259605, 389005, 700209, 1167015, 2100627, 3501045, 6301881, 10503135, 31509405, 49870441, 149611323, 249352205, 448833969, 748056615, 1346501907, 2244169845, 4039505721, 6732509535, 20197528605]

約数ペア:

[(1, 20197528605), (3, 6732509535), (5, 4039505721), (9, 2244169845), (15, 1346501907), (27, 748056615), (45, 448833969), (81, 249352205), (135, 149611323), (405, 49870441), (641, 31509405), (1923, 10503135), (3205, 6301881), (5769, 3501045), (9615, 2100627), (17307, 1167015), (28845, 700209), (51921, 389005), (77801, 259605), (86535, 233403)]