78840800

素因数分解:

$2^5\times 5^2\times {\mathrm{139}}^1\times {\mathrm{709}}^1$

素因数の和:868

約数の個数: 72

約数和(自身を含む): 194128200

約数和(自身を除く): 115287400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 139, 160, 200, 278, 400, 556, 695, 709, 800, 1112, 1390, 1418, 2224, 2780, 2836, 3475, 3545, 4448, 5560, 5672, 6950, 7090, 11120, 11344, 13900, 14180, 17725, 22240, 22688, 27800, 28360, 35450, 55600, 56720, 70900, 98551, 111200, 113440, 141800, 197102, 283600, 394204, 492755, 567200, 788408, 985510, 1576816, 1971020, 2463775, 3153632, 3942040, 4927550, 7884080, 9855100, 15768160, 19710200, 39420400, 78840800]

約数ペア:

[(1, 78840800), (2, 39420400), (4, 19710200), (5, 15768160), (8, 9855100), (10, 7884080), (16, 4927550), (20, 3942040), (25, 3153632), (32, 2463775), (40, 1971020), (50, 1576816), (80, 985510), (100, 788408), (139, 567200), (160, 492755), (200, 394204), (278, 283600), (400, 197102), (556, 141800), (695, 113440), (709, 111200), (800, 98551), (1112, 70900), (1390, 56720), (1418, 55600), (2224, 35450), (2780, 28360), (2836, 27800), (3475, 22688), (3545, 22240), (4448, 17725), (5560, 14180), (5672, 13900), (6950, 11344), (7090, 11120)]