19402015

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{463}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 25640640

約数和(自身を除く): 6238625

約数列:

[1, 5, 17, 29, 85, 145, 289, 463, 493, 1445, 2315, 2465, 7871, 8381, 13427, 39355, 41905, 67135, 133807, 228259, 669035, 1141295, 3880403, 19402015]

約数ペア:

[(1, 19402015), (5, 3880403), (17, 1141295), (29, 669035), (85, 228259), (145, 133807), (289, 67135), (463, 41905), (493, 39355), (1445, 13427), (2315, 8381), (2465, 7871)]