1990389520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3554267}}^1$

素因数の和:3554287

約数の個数: 40

約数和(自身を含む): 5288750784

約数和(自身を除く): 3298361264

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3554267, 7108534, 14217068, 17771335, 24879869, 28434136, 35542670, 49759738, 56868272, 71085340, 99519476, 124399345, 142170680, 199038952, 248798690, 284341360, 398077904, 497597380, 995194760, 1990389520]

約数ペア:

[(1, 1990389520), (2, 995194760), (4, 497597380), (5, 398077904), (7, 284341360), (8, 248798690), (10, 199038952), (14, 142170680), (16, 124399345), (20, 99519476), (28, 71085340), (35, 56868272), (40, 49759738), (56, 35542670), (70, 28434136), (80, 24879869), (112, 17771335), (140, 14217068), (280, 7108534), (560, 3554267)]