81988605

素因数分解:

$3^4\times 5^1\times {\mathrm{202441}}^1$

素因数の和:202458

約数の個数: 20

約数和(自身を含む): 146972892

約数和(自身を除く): 64984287

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 202441, 607323, 1012205, 1821969, 3036615, 5465907, 9109845, 16397721, 27329535, 81988605]

約数ペア:

[(1, 81988605), (3, 27329535), (5, 16397721), (9, 9109845), (15, 5465907), (27, 3036615), (45, 1821969), (81, 1012205), (135, 607323), (405, 202441)]