80428280

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1\times {\mathrm{239}}^1$

素因数の和:476

約数の個数: 64

約数和(自身を含む): 186624000

約数和(自身を除く): 106195720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 179, 188, 235, 239, 358, 376, 470, 478, 716, 895, 940, 956, 1195, 1432, 1790, 1880, 1912, 2390, 3580, 4780, 7160, 8413, 9560, 11233, 16826, 22466, 33652, 42065, 42781, 44932, 56165, 67304, 84130, 85562, 89864, 112330, 168260, 171124, 213905, 224660, 336520, 342248, 427810, 449320, 855620, 1711240, 2010707, 4021414, 8042828, 10053535, 16085656, 20107070, 40214140, 80428280]

約数ペア:

[(1, 80428280), (2, 40214140), (4, 20107070), (5, 16085656), (8, 10053535), (10, 8042828), (20, 4021414), (40, 2010707), (47, 1711240), (94, 855620), (179, 449320), (188, 427810), (235, 342248), (239, 336520), (358, 224660), (376, 213905), (470, 171124), (478, 168260), (716, 112330), (895, 89864), (940, 85562), (956, 84130), (1195, 67304), (1432, 56165), (1790, 44932), (1880, 42781), (1912, 42065), (2390, 33652), (3580, 22466), (4780, 16826), (7160, 11233), (8413, 9560)]