220886720

素因数分解:

$2^6\times 5^1\times {\mathrm{690271}}^1$

素因数の和:690288

約数の個数: 28

約数和(自身を含む): 525987264

約数和(自身を除く): 305100544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 690271, 1380542, 2761084, 3451355, 5522168, 6902710, 11044336, 13805420, 22088672, 27610840, 44177344, 55221680, 110443360, 220886720]

約数ペア:

[(1, 220886720), (2, 110443360), (4, 55221680), (5, 44177344), (8, 27610840), (10, 22088672), (16, 13805420), (20, 11044336), (32, 6902710), (40, 5522168), (64, 3451355), (80, 2761084), (160, 1380542), (320, 690271)]