20890356285

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{208393}}^1$

素因数の和:208605

約数の個数: 32

約数和(自身を含む): 34450028928

約数和(自身を除く): 13559672643

約数列:

[1, 3, 5, 15, 41, 123, 163, 205, 489, 615, 815, 2445, 6683, 20049, 33415, 100245, 208393, 625179, 1041965, 3125895, 8544113, 25632339, 33968059, 42720565, 101904177, 128161695, 169840295, 509520885, 1392690419, 4178071257, 6963452095, 20890356285]

約数ペア:

[(1, 20890356285), (3, 6963452095), (5, 4178071257), (15, 1392690419), (41, 509520885), (123, 169840295), (163, 128161695), (205, 101904177), (489, 42720565), (615, 33968059), (815, 25632339), (2445, 8544113), (6683, 3125895), (20049, 1041965), (33415, 625179), (100245, 208393)]