25650451010

素因数分解:

$2^1\times 5^1\times {\mathrm{4001}}^1\times {\mathrm{641101}}^1$

素因数の和:645109

約数の個数: 16

約数和(自身を含む): 46182423672

約数和(自身を除く): 20531972662

約数列:

[1, 2, 5, 10, 4001, 8002, 20005, 40010, 641101, 1282202, 3205505, 6411010, 2565045101, 5130090202, 12825225505, 25650451010]

約数ペア:

[(1, 25650451010), (2, 12825225505), (5, 5130090202), (10, 2565045101), (4001, 6411010), (8002, 3205505), (20005, 1282202), (40010, 641101)]