16809980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{701}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 22108900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 701, 1090, 1199, 1402, 2180, 2398, 2804, 3505, 4796, 5995, 7010, 7711, 11990, 14020, 15422, 23980, 30844, 38555, 76409, 77110, 152818, 154220, 305636, 382045, 764090, 840499, 1528180, 1680998, 3361996, 4202495, 8404990, 16809980]

約数ペア:

[(1, 16809980), (2, 8404990), (4, 4202495), (5, 3361996), (10, 1680998), (11, 1528180), (20, 840499), (22, 764090), (44, 382045), (55, 305636), (109, 154220), (110, 152818), (218, 77110), (220, 76409), (436, 38555), (545, 30844), (701, 23980), (1090, 15422), (1199, 14020), (1402, 11990), (2180, 7711), (2398, 7010), (2804, 5995), (3505, 4796)]