20725257

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{409}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 33587200

約数和(自身を除く): 12861943

約数列:

[1, 3, 7, 19, 21, 57, 127, 133, 381, 399, 409, 889, 1227, 2413, 2667, 2863, 7239, 7771, 8589, 16891, 23313, 50673, 51943, 54397, 155829, 163191, 363601, 986917, 1090803, 2960751, 6908419, 20725257]

約数ペア:

[(1, 20725257), (3, 6908419), (7, 2960751), (19, 1090803), (21, 986917), (57, 363601), (127, 163191), (133, 155829), (381, 54397), (399, 51943), (409, 50673), (889, 23313), (1227, 16891), (2413, 8589), (2667, 7771), (2863, 7239)]