28234880

素因数分解:

$2^7\times 5^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 68170680

約数和(自身を除く): 39935800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 281, 314, 320, 562, 628, 640, 785, 1124, 1256, 1405, 1570, 2248, 2512, 2810, 3140, 4496, 5024, 5620, 6280, 8992, 10048, 11240, 12560, 17984, 20096, 22480, 25120, 35968, 44117, 44960, 50240, 88234, 89920, 100480, 176468, 179840, 220585, 352936, 441170, 705872, 882340, 1411744, 1764680, 2823488, 3529360, 5646976, 7058720, 14117440, 28234880]

約数ペア:

[(1, 28234880), (2, 14117440), (4, 7058720), (5, 5646976), (8, 3529360), (10, 2823488), (16, 1764680), (20, 1411744), (32, 882340), (40, 705872), (64, 441170), (80, 352936), (128, 220585), (157, 179840), (160, 176468), (281, 100480), (314, 89920), (320, 88234), (562, 50240), (628, 44960), (640, 44117), (785, 35968), (1124, 25120), (1256, 22480), (1405, 20096), (1570, 17984), (2248, 12560), (2512, 11240), (2810, 10048), (3140, 8992), (4496, 6280), (5024, 5620)]