208405715

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1\times {\mathrm{479}}^1$

素因数の和:923

約数の個数: 32

約数和(自身を含む): 296386560

約数和(自身を除く): 87980845

約数列:

[1, 5, 7, 31, 35, 155, 217, 401, 479, 1085, 2005, 2395, 2807, 3353, 12431, 14035, 14849, 16765, 62155, 74245, 87017, 103943, 192079, 435085, 519715, 960395, 1344553, 5954449, 6722765, 29772245, 41681143, 208405715]

約数ペア:

[(1, 208405715), (5, 41681143), (7, 29772245), (31, 6722765), (35, 5954449), (155, 1344553), (217, 960395), (401, 519715), (479, 435085), (1085, 192079), (2005, 103943), (2395, 87017), (2807, 74245), (3353, 62155), (12431, 16765), (14035, 14849)]