131216720

素因数分解:

$2^4\times 5^1\times {\mathrm{1063}}^1\times {\mathrm{1543}}^1$

素因数の和:2619

約数の個数: 40

約数和(自身を含む): 305563776

約数和(自身を除く): 174347056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1063, 1543, 2126, 3086, 4252, 5315, 6172, 7715, 8504, 10630, 12344, 15430, 17008, 21260, 24688, 30860, 42520, 61720, 85040, 123440, 1640209, 3280418, 6560836, 8201045, 13121672, 16402090, 26243344, 32804180, 65608360, 131216720]

約数ペア:

[(1, 131216720), (2, 65608360), (4, 32804180), (5, 26243344), (8, 16402090), (10, 13121672), (16, 8201045), (20, 6560836), (40, 3280418), (80, 1640209), (1063, 123440), (1543, 85040), (2126, 61720), (3086, 42520), (4252, 30860), (5315, 24688), (6172, 21260), (7715, 17008), (8504, 15430), (10630, 12344)]