81309825

素因数分解:

$3^4\times 5^2\times {\mathrm{40153}}^1$

素因数の和:40175

約数の個数: 30

約数和(自身を含む): 150617654

約数和(自身を除く): 69307829

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 40153, 120459, 200765, 361377, 602295, 1003825, 1084131, 1806885, 3011475, 3252393, 5420655, 9034425, 16261965, 27103275, 81309825]

約数ペア:

[(1, 81309825), (3, 27103275), (5, 16261965), (9, 9034425), (15, 5420655), (25, 3252393), (27, 3011475), (45, 1806885), (75, 1084131), (81, 1003825), (135, 602295), (225, 361377), (405, 200765), (675, 120459), (2025, 40153)]