80947720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289099}}^1$

素因数の和:289117

約数の個数: 32

約数和(自身を含む): 208152000

約数和(自身を除く): 127204280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289099, 578198, 1156396, 1445495, 2023693, 2312792, 2890990, 4047386, 5781980, 8094772, 10118465, 11563960, 16189544, 20236930, 40473860, 80947720]

約数ペア:

[(1, 80947720), (2, 40473860), (4, 20236930), (5, 16189544), (7, 11563960), (8, 10118465), (10, 8094772), (14, 5781980), (20, 4047386), (28, 2890990), (35, 2312792), (40, 2023693), (56, 1445495), (70, 1156396), (140, 578198), (280, 289099)]