645749920

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1997}}^1$

素因数の和:2102

約数の個数: 96

約数和(自身を含む): 1595075328

約数和(自身を除く): 949325408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 47, 80, 86, 94, 160, 172, 188, 215, 235, 344, 376, 430, 470, 688, 752, 860, 940, 1376, 1504, 1720, 1880, 1997, 2021, 3440, 3760, 3994, 4042, 6880, 7520, 7988, 8084, 9985, 10105, 15976, 16168, 19970, 20210, 31952, 32336, 39940, 40420, 63904, 64672, 79880, 80840, 85871, 93859, 159760, 161680, 171742, 187718, 319520, 323360, 343484, 375436, 429355, 469295, 686968, 750872, 858710, 938590, 1373936, 1501744, 1717420, 1877180, 2747872, 3003488, 3434840, 3754360, 4035937, 6869680, 7508720, 8071874, 13739360, 15017440, 16143748, 20179685, 32287496, 40359370, 64574992, 80718740, 129149984, 161437480, 322874960, 645749920]

約数ペア:

[(1, 645749920), (2, 322874960), (4, 161437480), (5, 129149984), (8, 80718740), (10, 64574992), (16, 40359370), (20, 32287496), (32, 20179685), (40, 16143748), (43, 15017440), (47, 13739360), (80, 8071874), (86, 7508720), (94, 6869680), (160, 4035937), (172, 3754360), (188, 3434840), (215, 3003488), (235, 2747872), (344, 1877180), (376, 1717420), (430, 1501744), (470, 1373936), (688, 938590), (752, 858710), (860, 750872), (940, 686968), (1376, 469295), (1504, 429355), (1720, 375436), (1880, 343484), (1997, 323360), (2021, 319520), (3440, 187718), (3760, 171742), (3994, 161680), (4042, 159760), (6880, 93859), (7520, 85871), (7988, 80840), (8084, 79880), (9985, 64672), (10105, 63904), (15976, 40420), (16168, 39940), (19970, 32336), (20210, 31952)]