20387703

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1381}}^1$

素因数の和:1447

約数の個数: 32

約数和(自身を含む): 33610240

約数和(自身を除く): 13222537

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1381, 2109, 4143, 4921, 9667, 14763, 26239, 29001, 51097, 78717, 153291, 183673, 357679, 551019, 970843, 1073037, 2912529, 6795901, 20387703]

約数ペア:

[(1, 20387703), (3, 6795901), (7, 2912529), (19, 1073037), (21, 970843), (37, 551019), (57, 357679), (111, 183673), (133, 153291), (259, 78717), (399, 51097), (703, 29001), (777, 26239), (1381, 14763), (2109, 9667), (4143, 4921)]