20918506

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{4139}}^1$

素因数の和:4186

約数の個数: 24

約数和(自身を含む): 37856160

約数和(自身を除く): 16937654

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 361, 722, 2527, 4139, 5054, 8278, 28973, 57946, 78641, 157282, 550487, 1100974, 1494179, 2988358, 10459253, 20918506]

約数ペア:

[(1, 20918506), (2, 10459253), (7, 2988358), (14, 1494179), (19, 1100974), (38, 550487), (133, 157282), (266, 78641), (361, 57946), (722, 28973), (2527, 8278), (4139, 5054)]