221488880

素因数分解:

$2^4\times 5^1\times {\mathrm{2768611}}^1$

素因数の和:2768624

約数の個数: 20

約数和(自身を含む): 514961832

約数和(自身を除く): 293472952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2768611, 5537222, 11074444, 13843055, 22148888, 27686110, 44297776, 55372220, 110744440, 221488880]

約数ペア:

[(1, 221488880), (2, 110744440), (4, 55372220), (5, 44297776), (8, 27686110), (10, 22148888), (16, 13843055), (20, 11074444), (40, 5537222), (80, 2768611)]