21972280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49937}}^1$

素因数の和:49959

約数の個数: 32

約数和(自身を含む): 53933040

約数和(自身を除く): 31960760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49937, 99874, 199748, 249685, 399496, 499370, 549307, 998740, 1098614, 1997480, 2197228, 2746535, 4394456, 5493070, 10986140, 21972280]

約数ペア:

[(1, 21972280), (2, 10986140), (4, 5493070), (5, 4394456), (8, 2746535), (10, 2197228), (11, 1997480), (20, 1098614), (22, 998740), (40, 549307), (44, 499370), (55, 399496), (88, 249685), (110, 199748), (220, 99874), (440, 49937)]