627436820

素因数分解:

$2^2\times 5^1\times {\mathrm{4001}}^1\times {\mathrm{7841}}^1$

素因数の和:11851

約数の個数: 24

約数和(自身を含む): 1318114728

約数和(自身を除く): 690677908

約数列:

[1, 2, 4, 5, 10, 20, 4001, 7841, 8002, 15682, 16004, 20005, 31364, 39205, 40010, 78410, 80020, 156820, 31371841, 62743682, 125487364, 156859205, 313718410, 627436820]

約数ペア:

[(1, 627436820), (2, 313718410), (4, 156859205), (5, 125487364), (10, 62743682), (20, 31371841), (4001, 156820), (7841, 80020), (8002, 78410), (15682, 40010), (16004, 39205), (20005, 31364)]