20897165360

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6371087}}^1$

素因数の和:6371141

約数の個数: 40

約数和(自身を含む): 49770939456

約数和(自身を除く): 28873774096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6371087, 12742174, 25484348, 31855435, 50968696, 63710870, 101937392, 127421740, 254843480, 261214567, 509686960, 522429134, 1044858268, 1306072835, 2089716536, 2612145670, 4179433072, 5224291340, 10448582680, 20897165360]

約数ペア:

[(1, 20897165360), (2, 10448582680), (4, 5224291340), (5, 4179433072), (8, 2612145670), (10, 2089716536), (16, 1306072835), (20, 1044858268), (40, 522429134), (41, 509686960), (80, 261214567), (82, 254843480), (164, 127421740), (205, 101937392), (328, 63710870), (410, 50968696), (656, 31855435), (820, 25484348), (1640, 12742174), (3280, 6371087)]