20137455

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1187}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 18781425

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 45, 65, 87, 117, 145, 195, 261, 377, 435, 585, 1131, 1187, 1305, 1885, 3393, 3561, 5655, 5935, 10683, 15431, 16965, 17805, 34423, 46293, 53415, 77155, 103269, 138879, 172115, 231465, 309807, 447499, 516345, 694395, 1342497, 1549035, 2237495, 4027491, 6712485, 20137455]

約数ペア:

[(1, 20137455), (3, 6712485), (5, 4027491), (9, 2237495), (13, 1549035), (15, 1342497), (29, 694395), (39, 516345), (45, 447499), (65, 309807), (87, 231465), (117, 172115), (145, 138879), (195, 103269), (261, 77155), (377, 53415), (435, 46293), (585, 34423), (1131, 17805), (1187, 16965), (1305, 15431), (1885, 10683), (3393, 5935), (3561, 5655)]