21000306640

素因数分解:

$2^4\times 5^1\times {\mathrm{262503833}}^1$

素因数の和:262503846

約数の個数: 20

約数和(自身を含む): 48825713124

約数和(自身を除く): 27825406484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262503833, 525007666, 1050015332, 1312519165, 2100030664, 2625038330, 4200061328, 5250076660, 10500153320, 21000306640]

約数ペア:

[(1, 21000306640), (2, 10500153320), (4, 5250076660), (5, 4200061328), (8, 2625038330), (10, 2100030664), (16, 1312519165), (20, 1050015332), (40, 525007666), (80, 262503833)]