1639235972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{1999}}^1\times {\mathrm{18637}}^1$

素因数の和:20651

約数の個数: 24

約数和(自身を含む): 3131184000

約数和(自身を除く): 1491948028

約数列:

[1, 2, 4, 11, 22, 44, 1999, 3998, 7996, 18637, 21989, 37274, 43978, 74548, 87956, 205007, 410014, 820028, 37255363, 74510726, 149021452, 409808993, 819617986, 1639235972]

約数ペア:

[(1, 1639235972), (2, 819617986), (4, 409808993), (11, 149021452), (22, 74510726), (44, 37255363), (1999, 820028), (3998, 410014), (7996, 205007), (18637, 87956), (21989, 74548), (37274, 43978)]