21610791

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1031}}^1$

素因数の和:1191

約数の個数: 24

約数和(自身を含む): 33325344

約数和(自身を除く): 11714553

約数列:

[1, 3, 9, 17, 51, 137, 153, 411, 1031, 1233, 2329, 3093, 6987, 9279, 17527, 20961, 52581, 141247, 157743, 423741, 1271223, 2401199, 7203597, 21610791]

約数ペア:

[(1, 21610791), (3, 7203597), (9, 2401199), (17, 1271223), (51, 423741), (137, 157743), (153, 141247), (411, 52581), (1031, 20961), (1233, 17527), (2329, 9279), (3093, 6987)]