28005040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1163}}^1$

素因数の和:1226

約数の個数: 80

約数和(自身を含む): 76209408

約数和(自身を除く): 48204368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 860, 1163, 1204, 1505, 1720, 2326, 2408, 3010, 3440, 4652, 4816, 5815, 6020, 8141, 9304, 11630, 12040, 16282, 18608, 23260, 24080, 32564, 40705, 46520, 50009, 65128, 81410, 93040, 100018, 130256, 162820, 200036, 250045, 325640, 350063, 400072, 500090, 651280, 700126, 800144, 1000180, 1400252, 1750315, 2000360, 2800504, 3500630, 4000720, 5601008, 7001260, 14002520, 28005040]

約数ペア:

[(1, 28005040), (2, 14002520), (4, 7001260), (5, 5601008), (7, 4000720), (8, 3500630), (10, 2800504), (14, 2000360), (16, 1750315), (20, 1400252), (28, 1000180), (35, 800144), (40, 700126), (43, 651280), (56, 500090), (70, 400072), (80, 350063), (86, 325640), (112, 250045), (140, 200036), (172, 162820), (215, 130256), (280, 100018), (301, 93040), (344, 81410), (430, 65128), (560, 50009), (602, 46520), (688, 40705), (860, 32564), (1163, 24080), (1204, 23260), (1505, 18608), (1720, 16282), (2326, 12040), (2408, 11630), (3010, 9304), (3440, 8141), (4652, 6020), (4816, 5815)]