19987330

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1667}}^1$

素因数の和:1794

約数の個数: 32

約数和(自身を含む): 39631680

約数和(自身を除く): 19644350

約数列:

[1, 2, 5, 10, 11, 22, 55, 109, 110, 218, 545, 1090, 1199, 1667, 2398, 3334, 5995, 8335, 11990, 16670, 18337, 36674, 91685, 181703, 183370, 363406, 908515, 1817030, 1998733, 3997466, 9993665, 19987330]

約数ペア:

[(1, 19987330), (2, 9993665), (5, 3997466), (10, 1998733), (11, 1817030), (22, 908515), (55, 363406), (109, 183370), (110, 181703), (218, 91685), (545, 36674), (1090, 18337), (1199, 16670), (1667, 11990), (2398, 8335), (3334, 5995)]