180721345

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1801}}^1$

素因数の和:1921

約数の個数: 32

約数和(自身を含む): 257412096

約数和(自身を除く): 76690751

約数列:

[1, 5, 7, 35, 47, 61, 235, 305, 329, 427, 1645, 1801, 2135, 2867, 9005, 12607, 14335, 20069, 63035, 84647, 100345, 109861, 423235, 549305, 592529, 769027, 2962645, 3845135, 5163467, 25817335, 36144269, 180721345]

約数ペア:

[(1, 180721345), (5, 36144269), (7, 25817335), (35, 5163467), (47, 3845135), (61, 2962645), (235, 769027), (305, 592529), (329, 549305), (427, 423235), (1645, 109861), (1801, 100345), (2135, 84647), (2867, 63035), (9005, 20069), (12607, 14335)]