78840981

素因数分解:

$3^2\times {\mathrm{163}}^1\times {\mathrm{223}}^1\times {\mathrm{241}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 115571456

約数和(自身を除く): 36730475

約数列:

[1, 3, 9, 163, 223, 241, 489, 669, 723, 1467, 2007, 2169, 36349, 39283, 53743, 109047, 117849, 161229, 327141, 353547, 483687, 8760109, 26280327, 78840981]

約数ペア:

[(1, 78840981), (3, 26280327), (9, 8760109), (163, 483687), (223, 353547), (241, 327141), (489, 161229), (669, 117849), (723, 109047), (1467, 53743), (2007, 39283), (2169, 36349)]