21650215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{653}}^1$

素因数の和:1026

約数の個数: 16

約数和(自身を含む): 27468000

約数和(自身を除く): 5817785

約数列:

[1, 5, 19, 95, 349, 653, 1745, 3265, 6631, 12407, 33155, 62035, 227897, 1139485, 4330043, 21650215]

約数ペア:

[(1, 21650215), (5, 4330043), (19, 1139485), (95, 227897), (349, 62035), (653, 33155), (1745, 12407), (3265, 6631)]