817376800

素因数分解:

$2^5\times 5^2\times {\mathrm{991}}^1\times {\mathrm{1031}}^1$

素因数の和:2042

約数の個数: 72

約数和(自身を含む): 1999372032

約数和(自身を除く): 1181995232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 991, 1031, 1982, 2062, 3964, 4124, 4955, 5155, 7928, 8248, 9910, 10310, 15856, 16496, 19820, 20620, 24775, 25775, 31712, 32992, 39640, 41240, 49550, 51550, 79280, 82480, 99100, 103100, 158560, 164960, 198200, 206200, 396400, 412400, 792800, 824800, 1021721, 2043442, 4086884, 5108605, 8173768, 10217210, 16347536, 20434420, 25543025, 32695072, 40868840, 51086050, 81737680, 102172100, 163475360, 204344200, 408688400, 817376800]

約数ペア:

[(1, 817376800), (2, 408688400), (4, 204344200), (5, 163475360), (8, 102172100), (10, 81737680), (16, 51086050), (20, 40868840), (25, 32695072), (32, 25543025), (40, 20434420), (50, 16347536), (80, 10217210), (100, 8173768), (160, 5108605), (200, 4086884), (400, 2043442), (800, 1021721), (991, 824800), (1031, 792800), (1982, 412400), (2062, 396400), (3964, 206200), (4124, 198200), (4955, 164960), (5155, 158560), (7928, 103100), (8248, 99100), (9910, 82480), (10310, 79280), (15856, 51550), (16496, 49550), (19820, 41240), (20620, 39640), (24775, 32992), (25775, 31712)]