20909328

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{199}}^2$

素因数の和:420

約数の個数: 60

約数和(自身を含む): 59223888

約数和(自身を除く): 38314560

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 176, 199, 264, 398, 528, 597, 796, 1194, 1592, 2189, 2388, 3184, 4378, 4776, 6567, 8756, 9552, 13134, 17512, 26268, 35024, 39601, 52536, 79202, 105072, 118803, 158404, 237606, 316808, 435611, 475212, 633616, 871222, 950424, 1306833, 1742444, 1900848, 2613666, 3484888, 5227332, 6969776, 10454664, 20909328]

約数ペア:

[(1, 20909328), (2, 10454664), (3, 6969776), (4, 5227332), (6, 3484888), (8, 2613666), (11, 1900848), (12, 1742444), (16, 1306833), (22, 950424), (24, 871222), (33, 633616), (44, 475212), (48, 435611), (66, 316808), (88, 237606), (132, 158404), (176, 118803), (199, 105072), (264, 79202), (398, 52536), (528, 39601), (597, 35024), (796, 26268), (1194, 17512), (1592, 13134), (2189, 9552), (2388, 8756), (3184, 6567), (4378, 4776)]