21891897

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:494

約数の個数: 32

約数和(自身を含む): 34099200

約数和(自身を除く): 12207303

約数列:

[1, 3, 9, 27, 29, 73, 87, 219, 261, 383, 657, 783, 1149, 1971, 2117, 3447, 6351, 10341, 11107, 19053, 27959, 33321, 57159, 83877, 99963, 251631, 299889, 754893, 810811, 2432433, 7297299, 21891897]

約数ペア:

[(1, 21891897), (3, 7297299), (9, 2432433), (27, 810811), (29, 754893), (73, 299889), (87, 251631), (219, 99963), (261, 83877), (383, 57159), (657, 33321), (783, 27959), (1149, 19053), (1971, 11107), (2117, 10341), (3447, 6351)]