20485388

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{293}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 24560116

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 227, 293, 308, 454, 586, 908, 1172, 1589, 2051, 2497, 3178, 3223, 4102, 4994, 6356, 6446, 8204, 9988, 12892, 17479, 22561, 34958, 45122, 66511, 69916, 90244, 133022, 266044, 465577, 731621, 931154, 1463242, 1862308, 2926484, 5121347, 10242694, 20485388]

約数ペア:

[(1, 20485388), (2, 10242694), (4, 5121347), (7, 2926484), (11, 1862308), (14, 1463242), (22, 931154), (28, 731621), (44, 465577), (77, 266044), (154, 133022), (227, 90244), (293, 69916), (308, 66511), (454, 45122), (586, 34958), (908, 22561), (1172, 17479), (1589, 12892), (2051, 9988), (2497, 8204), (3178, 6446), (3223, 6356), (4102, 4994)]