20686905

素因数分解:

$3^2\times 5^1\times {\mathrm{233}}^1\times {\mathrm{1973}}^1$

素因数の和:2217

約数の個数: 24

約数和(自身を含む): 36029448

約数和(自身を除く): 15342543

約数列:

[1, 3, 5, 9, 15, 45, 233, 699, 1165, 1973, 2097, 3495, 5919, 9865, 10485, 17757, 29595, 88785, 459709, 1379127, 2298545, 4137381, 6895635, 20686905]

約数ペア:

[(1, 20686905), (3, 6895635), (5, 4137381), (9, 2298545), (15, 1379127), (45, 459709), (233, 88785), (699, 29595), (1165, 17757), (1973, 10485), (2097, 9865), (3495, 5919)]