81105660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{450587}}^1$

素因数の和:450602

約数の個数: 36

約数和(自身を含む): 246021048

約数和(自身を除く): 164915388

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 450587, 901174, 1351761, 1802348, 2252935, 2703522, 4055283, 4505870, 5407044, 6758805, 8110566, 9011740, 13517610, 16221132, 20276415, 27035220, 40552830, 81105660]

約数ペア:

[(1, 81105660), (2, 40552830), (3, 27035220), (4, 20276415), (5, 16221132), (6, 13517610), (9, 9011740), (10, 8110566), (12, 6758805), (15, 5407044), (18, 4505870), (20, 4055283), (30, 2703522), (36, 2252935), (45, 1802348), (60, 1351761), (90, 901174), (180, 450587)]