20481855

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2591}}^1$

素因数の和:2647

約数の個数: 32

約数和(自身を含む): 35831808

約数和(自身を除く): 15349953

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2591, 2635, 7773, 7905, 12955, 38865, 44047, 80321, 132141, 220235, 240963, 401605, 660705, 1204815, 1365457, 4096371, 6827285, 20481855]

約数ペア:

[(1, 20481855), (3, 6827285), (5, 4096371), (15, 1365457), (17, 1204815), (31, 660705), (51, 401605), (85, 240963), (93, 220235), (155, 132141), (255, 80321), (465, 44047), (527, 38865), (1581, 12955), (2591, 7905), (2635, 7773)]