21999026

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{293}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 39287808

約数和(自身を除く): 17288782

約数列:

[1, 2, 7, 14, 31, 62, 173, 217, 293, 346, 434, 586, 1211, 2051, 2422, 4102, 5363, 9083, 10726, 18166, 37541, 50689, 63581, 75082, 101378, 127162, 354823, 709646, 1571359, 3142718, 10999513, 21999026]

約数ペア:

[(1, 21999026), (2, 10999513), (7, 3142718), (14, 1571359), (31, 709646), (62, 354823), (173, 127162), (217, 101378), (293, 75082), (346, 63581), (434, 50689), (586, 37541), (1211, 18166), (2051, 10726), (2422, 9083), (4102, 5363)]