28906731

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{12401}}^1$

素因数の和:12451

約数の個数: 24

約数和(自身を含む): 49012704

約数和(自身を除く): 20105973

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 12401, 37203, 86807, 111609, 260421, 458837, 781263, 1376511, 3211859, 4129533, 9635577, 28906731]

約数ペア:

[(1, 28906731), (3, 9635577), (7, 4129533), (9, 3211859), (21, 1376511), (37, 781263), (63, 458837), (111, 260421), (259, 111609), (333, 86807), (777, 37203), (2331, 12401)]