20378865

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8039}}^1$

素因数の和:8073

約数の個数: 24

約数和(自身を含む): 35311680

約数和(自身を除く): 14932815

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8039, 24117, 40195, 104507, 120585, 313521, 522535, 1358591, 1567605, 4075773, 6792955, 20378865]

約数ペア:

[(1, 20378865), (3, 6792955), (5, 4075773), (13, 1567605), (15, 1358591), (39, 522535), (65, 313521), (169, 120585), (195, 104507), (507, 40195), (845, 24117), (2535, 8039)]