21393933

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 33011712

約数和(自身を除く): 11617779

約数列:

[1, 3, 11, 23, 33, 69, 71, 213, 253, 397, 759, 781, 1191, 1633, 2343, 4367, 4899, 9131, 13101, 17963, 27393, 28187, 53889, 84561, 100441, 301323, 310057, 648301, 930171, 1944903, 7131311, 21393933]

約数ペア:

[(1, 21393933), (3, 7131311), (11, 1944903), (23, 930171), (33, 648301), (69, 310057), (71, 301323), (213, 100441), (253, 84561), (397, 53889), (759, 28187), (781, 27393), (1191, 17963), (1633, 13101), (2343, 9131), (4367, 4899)]