20905036

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 41029632

約数和(自身を除く): 20124596

約数列:

[1, 2, 4, 17, 31, 34, 47, 62, 68, 94, 124, 188, 211, 422, 527, 799, 844, 1054, 1457, 1598, 2108, 2914, 3196, 3587, 5828, 6541, 7174, 9917, 13082, 14348, 19834, 24769, 26164, 39668, 49538, 99076, 111197, 168589, 222394, 307427, 337178, 444788, 614854, 674356, 1229708, 5226259, 10452518, 20905036]

約数ペア:

[(1, 20905036), (2, 10452518), (4, 5226259), (17, 1229708), (31, 674356), (34, 614854), (47, 444788), (62, 337178), (68, 307427), (94, 222394), (124, 168589), (188, 111197), (211, 99076), (422, 49538), (527, 39668), (799, 26164), (844, 24769), (1054, 19834), (1457, 14348), (1598, 13082), (2108, 9917), (2914, 7174), (3196, 6541), (3587, 5828)]