28421260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2281}}^1$

素因数の和:2386

約数の個数: 48

約数和(自身を含む): 69007680

約数和(自身を除く): 40586420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1780, 2281, 2492, 3115, 4562, 6230, 9124, 11405, 12460, 15967, 22810, 31934, 45620, 63868, 79835, 159670, 203009, 319340, 406018, 812036, 1015045, 1421063, 2030090, 2842126, 4060180, 5684252, 7105315, 14210630, 28421260]

約数ペア:

[(1, 28421260), (2, 14210630), (4, 7105315), (5, 5684252), (7, 4060180), (10, 2842126), (14, 2030090), (20, 1421063), (28, 1015045), (35, 812036), (70, 406018), (89, 319340), (140, 203009), (178, 159670), (356, 79835), (445, 63868), (623, 45620), (890, 31934), (1246, 22810), (1780, 15967), (2281, 12460), (2492, 11405), (3115, 9124), (4562, 6230)]