21000388720

素因数分解:

$2^4\times 5^1\times {\mathrm{262504859}}^1$

素因数の和:262504872

約数の個数: 20

約数和(自身を含む): 48825903960

約数和(自身を除く): 27825515240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262504859, 525009718, 1050019436, 1312524295, 2100038872, 2625048590, 4200077744, 5250097180, 10500194360, 21000388720]

約数ペア:

[(1, 21000388720), (2, 10500194360), (4, 5250097180), (5, 4200077744), (8, 2625048590), (10, 2100038872), (16, 1312524295), (20, 1050019436), (40, 525009718), (80, 262504859)]