20281731

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:343

約数の個数: 24

約数和(自身を含む): 29103600

約数和(自身を除く): 8821869

約数列:

[1, 3, 17, 51, 149, 157, 289, 447, 471, 867, 2533, 2669, 7599, 8007, 23393, 43061, 45373, 70179, 129183, 136119, 397681, 1193043, 6760577, 20281731]

約数ペア:

[(1, 20281731), (3, 6760577), (17, 1193043), (51, 397681), (149, 136119), (157, 129183), (289, 70179), (447, 45373), (471, 43061), (867, 23393), (2533, 8007), (2669, 7599)]