28312235

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 11863765

約数列:

[1, 5, 7, 35, 61, 89, 149, 305, 427, 445, 623, 745, 1043, 2135, 3115, 5215, 5429, 9089, 13261, 27145, 38003, 45445, 63623, 66305, 92827, 190015, 318115, 464135, 808921, 4044605, 5662447, 28312235]

約数ペア:

[(1, 28312235), (5, 5662447), (7, 4044605), (35, 808921), (61, 464135), (89, 318115), (149, 190015), (305, 92827), (427, 66305), (445, 63623), (623, 45445), (745, 38003), (1043, 27145), (2135, 13261), (3115, 9089), (5215, 5429)]