20944784

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4349}}^1$

素因数の和:4407

約数の個数: 40

約数和(自身を含む): 47467200

約数和(自身を除く): 26522416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4349, 4816, 8698, 17396, 30443, 34792, 60886, 69584, 121772, 187007, 243544, 374014, 487088, 748028, 1309049, 1496056, 2618098, 2992112, 5236196, 10472392, 20944784]

約数ペア:

[(1, 20944784), (2, 10472392), (4, 5236196), (7, 2992112), (8, 2618098), (14, 1496056), (16, 1309049), (28, 748028), (43, 487088), (56, 374014), (86, 243544), (112, 187007), (172, 121772), (301, 69584), (344, 60886), (602, 34792), (688, 30443), (1204, 17396), (2408, 8698), (4349, 4816)]