256847320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{337957}}^1$

素因数の和:337987

約数の個数: 32

約数和(自身を含む): 608324400

約数和(自身を除く): 351477080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 337957, 675914, 1351828, 1689785, 2703656, 3379570, 6421183, 6759140, 12842366, 13518280, 25684732, 32105915, 51369464, 64211830, 128423660, 256847320]

約数ペア:

[(1, 256847320), (2, 128423660), (4, 64211830), (5, 51369464), (8, 32105915), (10, 25684732), (19, 13518280), (20, 12842366), (38, 6759140), (40, 6421183), (76, 3379570), (95, 2703656), (152, 1689785), (190, 1351828), (380, 675914), (760, 337957)]