393375560

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^2\times {\mathrm{509}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 893259900

約数和(自身を除く): 499884340

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 509, 556, 695, 1018, 1112, 1390, 2036, 2545, 2780, 4072, 5090, 5560, 10180, 19321, 20360, 38642, 70751, 77284, 96605, 141502, 154568, 193210, 283004, 353755, 386420, 566008, 707510, 772840, 1415020, 2830040, 9834389, 19668778, 39337556, 49171945, 78675112, 98343890, 196687780, 393375560]

約数ペア:

[(1, 393375560), (2, 196687780), (4, 98343890), (5, 78675112), (8, 49171945), (10, 39337556), (20, 19668778), (40, 9834389), (139, 2830040), (278, 1415020), (509, 772840), (556, 707510), (695, 566008), (1018, 386420), (1112, 353755), (1390, 283004), (2036, 193210), (2545, 154568), (2780, 141502), (4072, 96605), (5090, 77284), (5560, 70751), (10180, 38642), (19321, 20360)]