21131577

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{14767}}^1$

素因数の和:14829

約数の個数: 16

約数和(自身を含む): 31898880

約数和(自身を除く): 10767303

約数列:

[1, 3, 9, 27, 53, 159, 477, 1431, 14767, 44301, 132903, 398709, 782651, 2347953, 7043859, 21131577]

約数ペア:

[(1, 21131577), (3, 7043859), (9, 2347953), (27, 782651), (53, 398709), (159, 132903), (477, 44301), (1431, 14767)]