21836919

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{409}}^1$

素因数の和:499

約数の個数: 24

約数和(自身を含む): 32304720

約数和(自身を除く): 10467801

約数列:

[1, 3, 13, 37, 39, 111, 409, 481, 1227, 1369, 1443, 4107, 5317, 15133, 15951, 17797, 45399, 53391, 196729, 559921, 590187, 1679763, 7278973, 21836919]

約数ペア:

[(1, 21836919), (3, 7278973), (13, 1679763), (37, 590187), (39, 559921), (111, 196729), (409, 53391), (481, 45399), (1227, 17797), (1369, 15951), (1443, 15133), (4107, 5317)]