201655760

素因数分解:

$2^4\times 5^1\times {\mathrm{2520697}}^1$

素因数の和:2520710

約数の個数: 20

約数和(自身を含む): 468849828

約数和(自身を除く): 267194068

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2520697, 5041394, 10082788, 12603485, 20165576, 25206970, 40331152, 50413940, 100827880, 201655760]

約数ペア:

[(1, 201655760), (2, 100827880), (4, 50413940), (5, 40331152), (8, 25206970), (10, 20165576), (16, 12603485), (20, 10082788), (40, 5041394), (80, 2520697)]