20928315

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:579

約数の個数: 32

約数和(自身を含む): 34822656

約数和(自身を除く): 13894341

約数列:

[1, 3, 5, 15, 43, 71, 129, 213, 215, 355, 457, 645, 1065, 1371, 2285, 3053, 6855, 9159, 15265, 19651, 32447, 45795, 58953, 97341, 98255, 162235, 294765, 486705, 1395221, 4185663, 6976105, 20928315]

約数ペア:

[(1, 20928315), (3, 6976105), (5, 4185663), (15, 1395221), (43, 486705), (71, 294765), (129, 162235), (213, 98255), (215, 97341), (355, 58953), (457, 45795), (645, 32447), (1065, 19651), (1371, 15265), (2285, 9159), (3053, 6855)]