20793890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^2$

素因数の和:231

約数の個数: 48

約数和(自身を含む): 43123752

約数和(自身を除く): 22329862

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 97, 130, 170, 194, 221, 442, 485, 970, 1105, 1261, 1649, 2210, 2522, 3298, 6305, 8245, 9409, 12610, 16490, 18818, 21437, 42874, 47045, 94090, 107185, 122317, 159953, 214370, 244634, 319906, 611585, 799765, 1223170, 1599530, 2079389, 4158778, 10396945, 20793890]

約数ペア:

[(1, 20793890), (2, 10396945), (5, 4158778), (10, 2079389), (13, 1599530), (17, 1223170), (26, 799765), (34, 611585), (65, 319906), (85, 244634), (97, 214370), (130, 159953), (170, 122317), (194, 107185), (221, 94090), (442, 47045), (485, 42874), (970, 21437), (1105, 18818), (1261, 16490), (1649, 12610), (2210, 9409), (2522, 8245), (3298, 6305)]