21493656

素因数分解:

$2^3\times 3^2\times {\mathrm{137}}^1\times {\mathrm{2179}}^1$

素因数の和:2328

約数の個数: 48

約数和(自身を含む): 58663800

約数和(自身を除く): 37170144

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 137, 274, 411, 548, 822, 1096, 1233, 1644, 2179, 2466, 3288, 4358, 4932, 6537, 8716, 9864, 13074, 17432, 19611, 26148, 39222, 52296, 78444, 156888, 298523, 597046, 895569, 1194092, 1791138, 2388184, 2686707, 3582276, 5373414, 7164552, 10746828, 21493656]

約数ペア:

[(1, 21493656), (2, 10746828), (3, 7164552), (4, 5373414), (6, 3582276), (8, 2686707), (9, 2388184), (12, 1791138), (18, 1194092), (24, 895569), (36, 597046), (72, 298523), (137, 156888), (274, 78444), (411, 52296), (548, 39222), (822, 26148), (1096, 19611), (1233, 17432), (1644, 13074), (2179, 9864), (2466, 8716), (3288, 6537), (4358, 4932)]