21428048

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70487}}^1$

素因数の和:70514

約数の個数: 20

約数和(自身を含む): 43702560

約数和(自身を除く): 22274512

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70487, 140974, 281948, 563896, 1127792, 1339253, 2678506, 5357012, 10714024, 21428048]

約数ペア:

[(1, 21428048), (2, 10714024), (4, 5357012), (8, 2678506), (16, 1339253), (19, 1127792), (38, 563896), (76, 281948), (152, 140974), (304, 70487)]