256984215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1\times {\mathrm{1429}}^1$

素因数の和:2087

約数の個数: 32

約数和(自身を含む): 433804800

約数和(自身を除く): 176820585

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 631, 1429, 1893, 3155, 4287, 7145, 9465, 11989, 21435, 27151, 35967, 59945, 81453, 135755, 179835, 407265, 901699, 2705097, 4508495, 13525485, 17132281, 51396843, 85661405, 256984215]

約数ペア:

[(1, 256984215), (3, 85661405), (5, 51396843), (15, 17132281), (19, 13525485), (57, 4508495), (95, 2705097), (285, 901699), (631, 407265), (1429, 179835), (1893, 135755), (3155, 81453), (4287, 59945), (7145, 35967), (9465, 27151), (11989, 21435)]