18668013

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:162

約数の個数: 64

約数和(自身を含む): 33331200

約数和(自身を除く): 14663187

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 59, 61, 91, 133, 177, 183, 247, 273, 399, 413, 427, 741, 767, 793, 1121, 1159, 1239, 1281, 1729, 2301, 2379, 3363, 3477, 3599, 5187, 5369, 5551, 7847, 8113, 10797, 14573, 15067, 16107, 16653, 23541, 24339, 25193, 43719, 45201, 46787, 68381, 75579, 102011, 105469, 140361, 205143, 306033, 316407, 327509, 478667, 888953, 982527, 1436001, 2666859, 6222671, 18668013]

約数ペア:

[(1, 18668013), (3, 6222671), (7, 2666859), (13, 1436001), (19, 982527), (21, 888953), (39, 478667), (57, 327509), (59, 316407), (61, 306033), (91, 205143), (133, 140361), (177, 105469), (183, 102011), (247, 75579), (273, 68381), (399, 46787), (413, 45201), (427, 43719), (741, 25193), (767, 24339), (793, 23541), (1121, 16653), (1159, 16107), (1239, 15067), (1281, 14573), (1729, 10797), (2301, 8113), (2379, 7847), (3363, 5551), (3477, 5369), (3599, 5187)]