20454540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{340909}}^1$

素因数の和:340921

約数の個数: 24

約数和(自身を含む): 57272880

約数和(自身を除く): 36818340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 340909, 681818, 1022727, 1363636, 1704545, 2045454, 3409090, 4090908, 5113635, 6818180, 10227270, 20454540]

約数ペア:

[(1, 20454540), (2, 10227270), (3, 6818180), (4, 5113635), (5, 4090908), (6, 3409090), (10, 2045454), (12, 1704545), (15, 1363636), (20, 1022727), (30, 681818), (60, 340909)]