20018786980

素因数分解:

$2^2\times 5^1\times {\mathrm{20201}}^1\times {\mathrm{49549}}^1$

素因数の和:69759

約数の個数: 24

約数和(自身を含む): 42042382200

約数和(自身を除く): 22023595220

約数列:

[1, 2, 4, 5, 10, 20, 20201, 40402, 49549, 80804, 99098, 101005, 198196, 202010, 247745, 404020, 495490, 990980, 1000939349, 2001878698, 4003757396, 5004696745, 10009393490, 20018786980]

約数ペア:

[(1, 20018786980), (2, 10009393490), (4, 5004696745), (5, 4003757396), (10, 2001878698), (20, 1000939349), (20201, 990980), (40402, 495490), (49549, 404020), (80804, 247745), (99098, 202010), (101005, 198196)]