20471913

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 38860800

約数和(自身を除く): 18388887

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 43, 63, 77, 99, 129, 189, 229, 231, 297, 301, 387, 473, 687, 693, 903, 1161, 1419, 1603, 2061, 2079, 2519, 2709, 3311, 4257, 4809, 6183, 7557, 8127, 9847, 9933, 12771, 14427, 17633, 22671, 29541, 29799, 43281, 52899, 68013, 68929, 88623, 89397, 108317, 158697, 206787, 265869, 324951, 476091, 620361, 758219, 974853, 1861083, 2274657, 2924559, 6823971, 20471913]

約数ペア:

[(1, 20471913), (3, 6823971), (7, 2924559), (9, 2274657), (11, 1861083), (21, 974853), (27, 758219), (33, 620361), (43, 476091), (63, 324951), (77, 265869), (99, 206787), (129, 158697), (189, 108317), (229, 89397), (231, 88623), (297, 68929), (301, 68013), (387, 52899), (473, 43281), (687, 29799), (693, 29541), (903, 22671), (1161, 17633), (1419, 14427), (1603, 12771), (2061, 9933), (2079, 9847), (2519, 8127), (2709, 7557), (3311, 6183), (4257, 4809)]