18913167

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3299}}^1$

素因数の和:3332

約数の個数: 36

約数和(自身を含む): 34234200

約数和(自身を除く): 15321033

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3299, 5733, 9897, 23093, 29691, 42887, 69279, 128661, 161651, 207837, 300209, 385983, 484953, 900627, 1454859, 2101463, 2701881, 6304389, 18913167]

約数ペア:

[(1, 18913167), (3, 6304389), (7, 2701881), (9, 2101463), (13, 1454859), (21, 900627), (39, 484953), (49, 385983), (63, 300209), (91, 207837), (117, 161651), (147, 128661), (273, 69279), (441, 42887), (637, 29691), (819, 23093), (1911, 9897), (3299, 5733)]