257085

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 463320

約数和(自身を除く): 206235

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 197, 261, 435, 591, 985, 1305, 1773, 2955, 5713, 8865, 17139, 28565, 51417, 85695, 257085]

約数ペア:

[(1, 257085), (3, 85695), (5, 51417), (9, 28565), (15, 17139), (29, 8865), (45, 5713), (87, 2955), (145, 1773), (197, 1305), (261, 985), (435, 591)]