40399120

素因数分解:

$2^4\times 5^1\times {\mathrm{504989}}^1$

素因数の和:505002

約数の個数: 20

約数和(自身を含む): 93928140

約数和(自身を除く): 53529020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 504989, 1009978, 2019956, 2524945, 4039912, 5049890, 8079824, 10099780, 20199560, 40399120]

約数ペア:

[(1, 40399120), (2, 20199560), (4, 10099780), (5, 8079824), (8, 5049890), (10, 4039912), (16, 2524945), (20, 2019956), (40, 1009978), (80, 504989)]