81845440

素因数分解:

$2^6\times 5^1\times {\mathrm{255767}}^1$

素因数の和:255784

約数の個数: 28

約数和(自身を含む): 194895216

約数和(自身を除く): 113049776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 255767, 511534, 1023068, 1278835, 2046136, 2557670, 4092272, 5115340, 8184544, 10230680, 16369088, 20461360, 40922720, 81845440]

約数ペア:

[(1, 81845440), (2, 40922720), (4, 20461360), (5, 16369088), (8, 10230680), (10, 8184544), (16, 5115340), (20, 4092272), (32, 2557670), (40, 2046136), (64, 1278835), (80, 1023068), (160, 511534), (320, 255767)]