21137158

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{347}}^1$

素因数の和:604

約数の個数: 32

約数和(自身を含む): 38419200

約数和(自身を除く): 17282042

約数列:

[1, 2, 7, 14, 19, 38, 133, 229, 266, 347, 458, 694, 1603, 2429, 3206, 4351, 4858, 6593, 8702, 13186, 30457, 46151, 60914, 79463, 92302, 158926, 556241, 1112482, 1509797, 3019594, 10568579, 21137158]

約数ペア:

[(1, 21137158), (2, 10568579), (7, 3019594), (14, 1509797), (19, 1112482), (38, 556241), (133, 158926), (229, 92302), (266, 79463), (347, 60914), (458, 46151), (694, 30457), (1603, 13186), (2429, 8702), (3206, 6593), (4351, 4858)]