20993778

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1229}}^1$

素因数の和:1323

約数の個数: 48

約数和(自身を含む): 49696920

約数和(自身を除く): 28703142

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 73, 78, 117, 146, 219, 234, 438, 657, 949, 1229, 1314, 1898, 2458, 2847, 3687, 5694, 7374, 8541, 11061, 15977, 17082, 22122, 31954, 47931, 89717, 95862, 143793, 179434, 269151, 287586, 538302, 807453, 1166321, 1614906, 2332642, 3498963, 6997926, 10496889, 20993778]

約数ペア:

[(1, 20993778), (2, 10496889), (3, 6997926), (6, 3498963), (9, 2332642), (13, 1614906), (18, 1166321), (26, 807453), (39, 538302), (73, 287586), (78, 269151), (117, 179434), (146, 143793), (219, 95862), (234, 89717), (438, 47931), (657, 31954), (949, 22122), (1229, 17082), (1314, 15977), (1898, 11061), (2458, 8541), (2847, 7374), (3687, 5694)]