18685720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27479}}^1$

素因数の和:27507

約数の個数: 32

約数和(自身を含む): 44517600

約数和(自身を除く): 25831880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 27479, 54958, 109916, 137395, 219832, 274790, 467143, 549580, 934286, 1099160, 1868572, 2335715, 3737144, 4671430, 9342860, 18685720]

約数ペア:

[(1, 18685720), (2, 9342860), (4, 4671430), (5, 3737144), (8, 2335715), (10, 1868572), (17, 1099160), (20, 934286), (34, 549580), (40, 467143), (68, 274790), (85, 219832), (136, 137395), (170, 109916), (340, 54958), (680, 27479)]