81142155

素因数分解:

$3^4\times 5^1\times {\mathrm{200351}}^1$

素因数の和:200368

約数の個数: 20

約数和(自身を含む): 145455552

約数和(自身を除く): 64313397

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 200351, 601053, 1001755, 1803159, 3005265, 5409477, 9015795, 16228431, 27047385, 81142155]

約数ペア:

[(1, 81142155), (3, 27047385), (5, 16228431), (9, 9015795), (15, 5409477), (27, 3005265), (45, 1803159), (81, 1001755), (135, 601053), (405, 200351)]