21525980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153757}}^1$

素因数の和:153773

約数の個数: 24

約数和(自身を含む): 51662688

約数和(自身を除く): 30136708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153757, 307514, 615028, 768785, 1076299, 1537570, 2152598, 3075140, 4305196, 5381495, 10762990, 21525980]

約数ペア:

[(1, 21525980), (2, 10762990), (4, 5381495), (5, 4305196), (7, 3075140), (10, 2152598), (14, 1537570), (20, 1076299), (28, 768785), (35, 615028), (70, 307514), (140, 153757)]