201391420

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{5851}}^1$

素因数の和:7581

約数の個数: 24

約数和(自身を含む): 423240048

約数和(自身を除く): 221848628

約数列:

[1, 2, 4, 5, 10, 20, 1721, 3442, 5851, 6884, 8605, 11702, 17210, 23404, 29255, 34420, 58510, 117020, 10069571, 20139142, 40278284, 50347855, 100695710, 201391420]

約数ペア:

[(1, 201391420), (2, 100695710), (4, 50347855), (5, 40278284), (10, 20139142), (20, 10069571), (1721, 117020), (3442, 58510), (5851, 34420), (6884, 29255), (8605, 23404), (11702, 17210)]