19918668

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{21557}}^1$

素因数の和:21582

約数の個数: 48

約数和(自身を含む): 57947904

約数和(自身を除く): 38029236

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 84, 132, 154, 231, 308, 462, 924, 21557, 43114, 64671, 86228, 129342, 150899, 237127, 258684, 301798, 452697, 474254, 603596, 711381, 905394, 948508, 1422762, 1659889, 1810788, 2845524, 3319778, 4979667, 6639556, 9959334, 19918668]

約数ペア:

[(1, 19918668), (2, 9959334), (3, 6639556), (4, 4979667), (6, 3319778), (7, 2845524), (11, 1810788), (12, 1659889), (14, 1422762), (21, 948508), (22, 905394), (28, 711381), (33, 603596), (42, 474254), (44, 452697), (66, 301798), (77, 258684), (84, 237127), (132, 150899), (154, 129342), (231, 86228), (308, 64671), (462, 43114), (924, 21557)]