21006628

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 41731200

約数和(自身を除く): 20724572

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 71, 76, 142, 229, 284, 323, 458, 646, 916, 1207, 1292, 1349, 2414, 2698, 3893, 4351, 4828, 5396, 7786, 8702, 15572, 16259, 17404, 22933, 32518, 45866, 65036, 73967, 91732, 147934, 276403, 295868, 308921, 552806, 617842, 1105612, 1235684, 5251657, 10503314, 21006628]

約数ペア:

[(1, 21006628), (2, 10503314), (4, 5251657), (17, 1235684), (19, 1105612), (34, 617842), (38, 552806), (68, 308921), (71, 295868), (76, 276403), (142, 147934), (229, 91732), (284, 73967), (323, 65036), (458, 45866), (646, 32518), (916, 22933), (1207, 17404), (1292, 16259), (1349, 15572), (2414, 8702), (2698, 7786), (3893, 5396), (4351, 4828)]