21116648

素因数分解:

$2^3\times 7^2\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 46594080

約数和(自身を除く): 25477432

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 103, 196, 206, 392, 412, 523, 721, 824, 1046, 1442, 2092, 2884, 3661, 4184, 5047, 5768, 7322, 10094, 14644, 20188, 25627, 29288, 40376, 51254, 53869, 102508, 107738, 205016, 215476, 377083, 430952, 754166, 1508332, 2639581, 3016664, 5279162, 10558324, 21116648]

約数ペア:

[(1, 21116648), (2, 10558324), (4, 5279162), (7, 3016664), (8, 2639581), (14, 1508332), (28, 754166), (49, 430952), (56, 377083), (98, 215476), (103, 205016), (196, 107738), (206, 102508), (392, 53869), (412, 51254), (523, 40376), (721, 29288), (824, 25627), (1046, 20188), (1442, 14644), (2092, 10094), (2884, 7322), (3661, 5768), (4184, 5047)]