81301105

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{1789}}^1$

素因数の和:2004

約数の個数: 16

約数和(自身を含む): 99882000

約数和(自身を除く): 18580895

約数列:

[1, 5, 61, 149, 305, 745, 1789, 8945, 9089, 45445, 109129, 266561, 545645, 1332805, 16260221, 81301105]

約数ペア:

[(1, 81301105), (5, 16260221), (61, 1332805), (149, 545645), (305, 266561), (745, 109129), (1789, 45445), (8945, 9089)]