31381805

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 16881235

約数列:

[1, 5, 7, 13, 35, 49, 59, 65, 91, 167, 245, 295, 413, 455, 637, 767, 835, 1169, 2065, 2171, 2891, 3185, 3835, 5369, 5845, 8183, 9853, 10855, 14455, 15197, 26845, 37583, 40915, 49265, 68971, 75985, 106379, 128089, 187915, 344855, 482797, 531895, 640445, 896623, 2413985, 4483115, 6276361, 31381805]

約数ペア:

[(1, 31381805), (5, 6276361), (7, 4483115), (13, 2413985), (35, 896623), (49, 640445), (59, 531895), (65, 482797), (91, 344855), (167, 187915), (245, 128089), (295, 106379), (413, 75985), (455, 68971), (637, 49265), (767, 40915), (835, 37583), (1169, 26845), (2065, 15197), (2171, 14455), (2891, 10855), (3185, 9853), (3835, 8183), (5369, 5845)]