255712040

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{8123}}^1$

素因数の和:8921

約数の個数: 32

約数和(自身を含む): 576154080

約数和(自身を除く): 320442040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 1574, 3148, 3935, 6296, 7870, 8123, 15740, 16246, 31480, 32492, 40615, 64984, 81230, 162460, 324920, 6392801, 12785602, 25571204, 31964005, 51142408, 63928010, 127856020, 255712040]

約数ペア:

[(1, 255712040), (2, 127856020), (4, 63928010), (5, 51142408), (8, 31964005), (10, 25571204), (20, 12785602), (40, 6392801), (787, 324920), (1574, 162460), (3148, 81230), (3935, 64984), (6296, 40615), (7870, 32492), (8123, 31480), (15740, 16246)]