21243795

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{367}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 36246528

約数和(自身を除く): 15002733

約数列:

[1, 3, 5, 15, 17, 51, 85, 227, 255, 367, 681, 1101, 1135, 1835, 3405, 3859, 5505, 6239, 11577, 18717, 19295, 31195, 57885, 83309, 93585, 249927, 416545, 1249635, 1416253, 4248759, 7081265, 21243795]

約数ペア:

[(1, 21243795), (3, 7081265), (5, 4248759), (15, 1416253), (17, 1249635), (51, 416545), (85, 249927), (227, 93585), (255, 83309), (367, 57885), (681, 31195), (1101, 19295), (1135, 18717), (1835, 11577), (3405, 6239), (3859, 5505)]