21985263

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11801}}^1$

素因数の和:11836

約数の個数: 20

約数和(自身を含む): 34273008

約数和(自身を除く): 12287745

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11801, 35403, 106209, 271423, 318627, 814269, 955881, 2442807, 7328421, 21985263]

約数ペア:

[(1, 21985263), (3, 7328421), (9, 2442807), (23, 955881), (27, 814269), (69, 318627), (81, 271423), (207, 106209), (621, 35403), (1863, 11801)]