256215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:87

約数の個数: 32

約数和(自身を含む): 460800

約数和(自身を除く): 204585

約数列:

[1, 3, 5, 15, 19, 29, 31, 57, 87, 93, 95, 145, 155, 285, 435, 465, 551, 589, 899, 1653, 1767, 2697, 2755, 2945, 4495, 8265, 8835, 13485, 17081, 51243, 85405, 256215]

約数ペア:

[(1, 256215), (3, 85405), (5, 51243), (15, 17081), (19, 13485), (29, 8835), (31, 8265), (57, 4495), (87, 2945), (93, 2755), (95, 2697), (145, 1767), (155, 1653), (285, 899), (435, 589), (465, 551)]