21658563

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 33600000

約数和(自身を除く): 11941437

約数列:

[1, 3, 9, 27, 29, 87, 139, 199, 261, 417, 597, 783, 1251, 1791, 3753, 4031, 5373, 5771, 12093, 17313, 27661, 36279, 51939, 82983, 108837, 155817, 248949, 746847, 802169, 2406507, 7219521, 21658563]

約数ペア:

[(1, 21658563), (3, 7219521), (9, 2406507), (27, 802169), (29, 746847), (87, 248949), (139, 155817), (199, 108837), (261, 82983), (417, 51939), (597, 36279), (783, 27661), (1251, 17313), (1791, 12093), (3753, 5771), (4031, 5373)]