1278403760

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{7907}}^1$

素因数の和:8010

約数の個数: 80

約数和(自身を含む): 3106515456

約数和(自身を除く): 1828111696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 47, 80, 86, 94, 172, 188, 215, 235, 344, 376, 430, 470, 688, 752, 860, 940, 1720, 1880, 2021, 3440, 3760, 4042, 7907, 8084, 10105, 15814, 16168, 20210, 31628, 32336, 39535, 40420, 63256, 79070, 80840, 126512, 158140, 161680, 316280, 340001, 371629, 632560, 680002, 743258, 1360004, 1486516, 1700005, 1858145, 2720008, 2973032, 3400010, 3716290, 5440016, 5946064, 6800020, 7432580, 13600040, 14865160, 15980047, 27200080, 29730320, 31960094, 63920188, 79900235, 127840376, 159800470, 255680752, 319600940, 639201880, 1278403760]

約数ペア:

[(1, 1278403760), (2, 639201880), (4, 319600940), (5, 255680752), (8, 159800470), (10, 127840376), (16, 79900235), (20, 63920188), (40, 31960094), (43, 29730320), (47, 27200080), (80, 15980047), (86, 14865160), (94, 13600040), (172, 7432580), (188, 6800020), (215, 5946064), (235, 5440016), (344, 3716290), (376, 3400010), (430, 2973032), (470, 2720008), (688, 1858145), (752, 1700005), (860, 1486516), (940, 1360004), (1720, 743258), (1880, 680002), (2021, 632560), (3440, 371629), (3760, 340001), (4042, 316280), (7907, 161680), (8084, 158140), (10105, 126512), (15814, 80840), (16168, 79070), (20210, 63256), (31628, 40420), (32336, 39535)]