20470359

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 13398441

約数列:

[1, 3, 7, 13, 21, 39, 91, 167, 273, 449, 501, 1169, 1347, 2171, 3143, 3507, 5837, 6513, 9429, 15197, 17511, 40859, 45591, 74983, 122577, 224949, 524881, 974779, 1574643, 2924337, 6823453, 20470359]

約数ペア:

[(1, 20470359), (3, 6823453), (7, 2924337), (13, 1574643), (21, 974779), (39, 524881), (91, 224949), (167, 122577), (273, 74983), (449, 45591), (501, 40859), (1169, 17511), (1347, 15197), (2171, 9429), (3143, 6513), (3507, 5837)]