205380405

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2699}}^1$

素因数の和:2818

約数の個数: 48

約数和(自身を含む): 379080000

約数和(自身を除く): 173699595

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 89, 95, 171, 267, 285, 445, 801, 855, 1335, 1691, 2699, 4005, 5073, 8097, 8455, 13495, 15219, 24291, 25365, 40485, 51281, 76095, 121455, 153843, 240211, 256405, 461529, 720633, 769215, 1201055, 2161899, 2307645, 3603165, 4564009, 10809495, 13692027, 22820045, 41076081, 68460135, 205380405]

約数ペア:

[(1, 205380405), (3, 68460135), (5, 41076081), (9, 22820045), (15, 13692027), (19, 10809495), (45, 4564009), (57, 3603165), (89, 2307645), (95, 2161899), (171, 1201055), (267, 769215), (285, 720633), (445, 461529), (801, 256405), (855, 240211), (1335, 153843), (1691, 121455), (2699, 76095), (4005, 51281), (5073, 40485), (8097, 25365), (8455, 24291), (13495, 15219)]