20871540

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{38651}}^1$

素因数の和:38669

約数の個数: 48

約数和(自身を含む): 64935360

約数和(自身を除く): 44063820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 38651, 77302, 115953, 154604, 193255, 231906, 347859, 386510, 463812, 579765, 695718, 773020, 1043577, 1159530, 1391436, 1739295, 2087154, 2319060, 3478590, 4174308, 5217885, 6957180, 10435770, 20871540]

約数ペア:

[(1, 20871540), (2, 10435770), (3, 6957180), (4, 5217885), (5, 4174308), (6, 3478590), (9, 2319060), (10, 2087154), (12, 1739295), (15, 1391436), (18, 1159530), (20, 1043577), (27, 773020), (30, 695718), (36, 579765), (45, 463812), (54, 386510), (60, 347859), (90, 231906), (108, 193255), (135, 154604), (180, 115953), (270, 77302), (540, 38651)]