19708540

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13499}}^1$

素因数の和:13581

約数の個数: 24

約数和(自身を含む): 41958000

約数和(自身を除く): 22249460

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 13499, 26998, 53996, 67495, 134990, 269980, 985427, 1970854, 3941708, 4927135, 9854270, 19708540]

約数ペア:

[(1, 19708540), (2, 9854270), (4, 4927135), (5, 3941708), (10, 1970854), (20, 985427), (73, 269980), (146, 134990), (292, 67495), (365, 53996), (730, 26998), (1460, 13499)]