20966440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2803}}^1$

素因数の和:2842

約数の個数: 64

約数和(自身を含む): 54509760

約数和(自身を除く): 33543320

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2803, 3740, 5606, 7480, 11212, 14015, 22424, 28030, 30833, 47651, 56060, 61666, 95302, 112120, 123332, 154165, 190604, 238255, 246664, 308330, 381208, 476510, 524161, 616660, 953020, 1048322, 1233320, 1906040, 2096644, 2620805, 4193288, 5241610, 10483220, 20966440]

約数ペア:

[(1, 20966440), (2, 10483220), (4, 5241610), (5, 4193288), (8, 2620805), (10, 2096644), (11, 1906040), (17, 1233320), (20, 1048322), (22, 953020), (34, 616660), (40, 524161), (44, 476510), (55, 381208), (68, 308330), (85, 246664), (88, 238255), (110, 190604), (136, 154165), (170, 123332), (187, 112120), (220, 95302), (340, 61666), (374, 56060), (440, 47651), (680, 30833), (748, 28030), (935, 22424), (1496, 14015), (1870, 11212), (2803, 7480), (3740, 5606)]