21986613

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{409}}^1$

素因数の和:610

約数の個数: 32

約数和(自身を含む): 35817600

約数和(自身を除く): 13830987

約数列:

[1, 3, 9, 11, 27, 33, 99, 181, 297, 409, 543, 1227, 1629, 1991, 3681, 4499, 4887, 5973, 11043, 13497, 17919, 40491, 53757, 74029, 121473, 222087, 666261, 814319, 1998783, 2442957, 7328871, 21986613]

約数ペア:

[(1, 21986613), (3, 7328871), (9, 2442957), (11, 1998783), (27, 814319), (33, 666261), (99, 222087), (181, 121473), (297, 74029), (409, 53757), (543, 40491), (1227, 17919), (1629, 13497), (1991, 11043), (3681, 5973), (4499, 4887)]