20203785

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2069}}^1$

素因数の和:2118

約数の個数: 48

約数和(自身を含む): 41333760

約数和(自身を除く): 21129975

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 63, 93, 105, 155, 217, 279, 315, 465, 651, 1085, 1395, 1953, 2069, 3255, 6207, 9765, 10345, 14483, 18621, 31035, 43449, 64139, 72415, 93105, 130347, 192417, 217245, 320695, 448973, 577251, 651735, 962085, 1346919, 2244865, 2886255, 4040757, 6734595, 20203785]

約数ペア:

[(1, 20203785), (3, 6734595), (5, 4040757), (7, 2886255), (9, 2244865), (15, 1346919), (21, 962085), (31, 651735), (35, 577251), (45, 448973), (63, 320695), (93, 217245), (105, 192417), (155, 130347), (217, 93105), (279, 72415), (315, 64139), (465, 43449), (651, 31035), (1085, 18621), (1395, 14483), (1953, 10345), (2069, 9765), (3255, 6207)]