644574736

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{6781}}^1$

素因数の和:7259

約数の個数: 40

約数和(自身を含む): 1348071704

約数和(自身を除く): 703496968

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 457, 914, 1828, 3656, 5941, 6781, 7312, 11882, 13562, 23764, 27124, 47528, 54248, 88153, 95056, 108496, 176306, 352612, 705224, 1410448, 3098917, 6197834, 12395668, 24791336, 40285921, 49582672, 80571842, 161143684, 322287368, 644574736]

約数ペア:

[(1, 644574736), (2, 322287368), (4, 161143684), (8, 80571842), (13, 49582672), (16, 40285921), (26, 24791336), (52, 12395668), (104, 6197834), (208, 3098917), (457, 1410448), (914, 705224), (1828, 352612), (3656, 176306), (5941, 108496), (6781, 95056), (7312, 88153), (11882, 54248), (13562, 47528), (23764, 27124)]