20447685

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26729}}^1$

素因数の和:26757

約数の個数: 24

約数和(自身を含む): 37528920

約数和(自身を除く): 17081235

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 26729, 80187, 133645, 240561, 400935, 454393, 1202805, 1363179, 2271965, 4089537, 6815895, 20447685]

約数ペア:

[(1, 20447685), (3, 6815895), (5, 4089537), (9, 2271965), (15, 1363179), (17, 1202805), (45, 454393), (51, 400935), (85, 240561), (153, 133645), (255, 80187), (765, 26729)]