21556964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{223}}^1$

素因数の和:277

約数の個数: 48

約数和(自身を含む): 44782080

約数和(自身を除く): 23225116

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 169, 223, 286, 338, 446, 572, 676, 892, 1859, 2197, 2453, 2899, 3718, 4394, 4906, 5798, 7436, 8788, 9812, 11596, 24167, 31889, 37687, 48334, 63778, 75374, 96668, 127556, 150748, 414557, 489931, 829114, 979862, 1658228, 1959724, 5389241, 10778482, 21556964]

約数ペア:

[(1, 21556964), (2, 10778482), (4, 5389241), (11, 1959724), (13, 1658228), (22, 979862), (26, 829114), (44, 489931), (52, 414557), (143, 150748), (169, 127556), (223, 96668), (286, 75374), (338, 63778), (446, 48334), (572, 37687), (676, 31889), (892, 24167), (1859, 11596), (2197, 9812), (2453, 8788), (2899, 7436), (3718, 5798), (4394, 4906)]