21831813

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1237}}^1$

素因数の和:1333

約数の個数: 24

約数和(自身を含む): 33024888

約数和(自身を除く): 11193075

約数列:

[1, 3, 9, 37, 53, 111, 159, 333, 477, 1237, 1961, 3711, 5883, 11133, 17649, 45769, 65561, 137307, 196683, 411921, 590049, 2425757, 7277271, 21831813]

約数ペア:

[(1, 21831813), (3, 7277271), (9, 2425757), (37, 590049), (53, 411921), (111, 196683), (159, 137307), (333, 65561), (477, 45769), (1237, 17649), (1961, 11133), (3711, 5883)]