20783399

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 32

約数和(自身を含む): 26880000

約数和(自身を除く): 6096601

約数列:

[1, 7, 13, 49, 59, 79, 91, 343, 413, 553, 637, 767, 1027, 2891, 3871, 4459, 4661, 5369, 7189, 20237, 27097, 32627, 37583, 50323, 60593, 228389, 263081, 352261, 424151, 1598723, 2969057, 20783399]

約数ペア:

[(1, 20783399), (7, 2969057), (13, 1598723), (49, 424151), (59, 352261), (79, 263081), (91, 228389), (343, 60593), (413, 50323), (553, 37583), (637, 32627), (767, 27097), (1027, 20237), (2891, 7189), (3871, 5369), (4459, 4661)]