12981225

素因数分解:

$3^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{2371}}^1$

素因数の和:2457

約数の個数: 24

約数和(自身を含む): 21765472

約数和(自身を除く): 8784247

約数列:

[1, 3, 5, 15, 25, 73, 75, 219, 365, 1095, 1825, 2371, 5475, 7113, 11855, 35565, 59275, 173083, 177825, 519249, 865415, 2596245, 4327075, 12981225]

約数ペア:

[(1, 12981225), (3, 4327075), (5, 2596245), (15, 865415), (25, 519249), (73, 177825), (75, 173083), (219, 59275), (365, 35565), (1095, 11855), (1825, 7113), (2371, 5475)]