199115985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{2969}}^1$

素因数の和:3257

約数の個数: 32

約数和(自身を含む): 338722560

約数和(自身を除く): 139606575

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 263, 789, 1315, 2969, 3945, 4471, 8907, 13413, 14845, 22355, 44535, 50473, 67065, 151419, 252365, 757095, 780847, 2342541, 3904235, 11712705, 13274399, 39823197, 66371995, 199115985]

約数ペア:

[(1, 199115985), (3, 66371995), (5, 39823197), (15, 13274399), (17, 11712705), (51, 3904235), (85, 2342541), (255, 780847), (263, 757095), (789, 252365), (1315, 151419), (2969, 67065), (3945, 50473), (4471, 44535), (8907, 22355), (13413, 14845)]