20959576

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24659624

約数列:

[1, 2, 4, 8, 11, 22, 29, 43, 44, 58, 86, 88, 116, 172, 191, 232, 319, 344, 382, 473, 638, 764, 946, 1247, 1276, 1528, 1892, 2101, 2494, 2552, 3784, 4202, 4988, 5539, 8213, 8404, 9976, 11078, 13717, 16426, 16808, 22156, 27434, 32852, 44312, 54868, 60929, 65704, 90343, 109736, 121858, 180686, 238177, 243716, 361372, 476354, 487432, 722744, 952708, 1905416, 2619947, 5239894, 10479788, 20959576]

約数ペア:

[(1, 20959576), (2, 10479788), (4, 5239894), (8, 2619947), (11, 1905416), (22, 952708), (29, 722744), (43, 487432), (44, 476354), (58, 361372), (86, 243716), (88, 238177), (116, 180686), (172, 121858), (191, 109736), (232, 90343), (319, 65704), (344, 60929), (382, 54868), (473, 44312), (638, 32852), (764, 27434), (946, 22156), (1247, 16808), (1276, 16426), (1528, 13717), (1892, 11078), (2101, 9976), (2494, 8404), (2552, 8213), (3784, 5539), (4202, 4988)]