40398920

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9439}}^1$

素因数の和:9557

約数の個数: 32

約数和(自身を含む): 91756800

約数和(自身を除く): 51357880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 9439, 18878, 37756, 47195, 75512, 94390, 188780, 377560, 1009973, 2019946, 4039892, 5049865, 8079784, 10099730, 20199460, 40398920]

約数ペア:

[(1, 40398920), (2, 20199460), (4, 10099730), (5, 8079784), (8, 5049865), (10, 4039892), (20, 2019946), (40, 1009973), (107, 377560), (214, 188780), (428, 94390), (535, 75512), (856, 47195), (1070, 37756), (2140, 18878), (4280, 9439)]