220506040

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{27983}}^1$

素因数の和:28191

約数の個数: 32

約数和(自身を含む): 498674880

約数和(自身を除く): 278168840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 27983, 55966, 111932, 139915, 223864, 279830, 559660, 1119320, 5512651, 11025302, 22050604, 27563255, 44101208, 55126510, 110253020, 220506040]

約数ペア:

[(1, 220506040), (2, 110253020), (4, 55126510), (5, 44101208), (8, 27563255), (10, 22050604), (20, 11025302), (40, 5512651), (197, 1119320), (394, 559660), (788, 279830), (985, 223864), (1576, 139915), (1970, 111932), (3940, 55966), (7880, 27983)]