19890380

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1523}}^1$

素因数の和:2185

約数の個数: 24

約数和(自身を含む): 41861232

約数和(自身を除く): 21970852

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 1523, 2612, 3046, 3265, 6092, 6530, 7615, 13060, 15230, 30460, 994519, 1989038, 3978076, 4972595, 9945190, 19890380]

約数ペア:

[(1, 19890380), (2, 9945190), (4, 4972595), (5, 3978076), (10, 1989038), (20, 994519), (653, 30460), (1306, 15230), (1523, 13060), (2612, 7615), (3046, 6530), (3265, 6092)]