21490084

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{6343}}^1$

素因数の和:6376

約数の個数: 36

約数和(自身を含む): 47250112

約数和(自身を除く): 25760028

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 121, 154, 242, 308, 484, 847, 1694, 3388, 6343, 12686, 25372, 44401, 69773, 88802, 139546, 177604, 279092, 488411, 767503, 976822, 1535006, 1953644, 3070012, 5372521, 10745042, 21490084]

約数ペア:

[(1, 21490084), (2, 10745042), (4, 5372521), (7, 3070012), (11, 1953644), (14, 1535006), (22, 976822), (28, 767503), (44, 488411), (77, 279092), (121, 177604), (154, 139546), (242, 88802), (308, 69773), (484, 44401), (847, 25372), (1694, 12686), (3388, 6343)]