21116727

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:368

約数の個数: 32

約数和(自身を含む): 32760000

約数和(自身を除く): 11643273

約数列:

[1, 3, 9, 27, 29, 87, 149, 181, 261, 447, 543, 783, 1341, 1629, 4023, 4321, 4887, 5249, 12963, 15747, 26969, 38889, 47241, 80907, 116667, 141723, 242721, 728163, 782101, 2346303, 7038909, 21116727]

約数ペア:

[(1, 21116727), (3, 7038909), (9, 2346303), (27, 782101), (29, 728163), (87, 242721), (149, 141723), (181, 116667), (261, 80907), (447, 47241), (543, 38889), (783, 26969), (1341, 15747), (1629, 12963), (4023, 5249), (4321, 4887)]