1999680980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1409}}^1\times {\mathrm{6451}}^1$

素因数の和:7880

約数の個数: 48

約数和(自身を含む): 4585049280

約数和(自身を除く): 2585368300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1409, 2818, 5636, 6451, 7045, 12902, 14090, 15499, 25804, 28180, 30998, 32255, 61996, 64510, 70961, 77495, 129020, 141922, 154990, 283844, 309980, 354805, 709610, 1419220, 9089459, 18178918, 36357836, 45447295, 90894590, 99984049, 181789180, 199968098, 399936196, 499920245, 999840490, 1999680980]

約数ペア:

[(1, 1999680980), (2, 999840490), (4, 499920245), (5, 399936196), (10, 199968098), (11, 181789180), (20, 99984049), (22, 90894590), (44, 45447295), (55, 36357836), (110, 18178918), (220, 9089459), (1409, 1419220), (2818, 709610), (5636, 354805), (6451, 309980), (7045, 283844), (12902, 154990), (14090, 141922), (15499, 129020), (25804, 77495), (28180, 70961), (30998, 64510), (32255, 61996)]