21152802788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{3109}}^1\times {\mathrm{130841}}^1$

素因数の和:133967

約数の個数: 24

約数和(自身を含む): 39878024760

約数和(自身を除く): 18725221972

約数列:

[1, 2, 4, 13, 26, 52, 3109, 6218, 12436, 40417, 80834, 130841, 161668, 261682, 523364, 1700933, 3401866, 6803732, 406784669, 813569338, 1627138676, 5288200697, 10576401394, 21152802788]

約数ペア:

[(1, 21152802788), (2, 10576401394), (4, 5288200697), (13, 1627138676), (26, 813569338), (52, 406784669), (3109, 6803732), (6218, 3401866), (12436, 1700933), (40417, 523364), (80834, 261682), (130841, 161668)]