19720765

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12211}}^1$

素因数の和:12252

約数の個数: 16

約数和(自身を含む): 26377920

約数和(自身を除く): 6657155

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 12211, 61055, 207587, 232009, 1037935, 1160045, 3944153, 19720765]

約数ペア:

[(1, 19720765), (5, 3944153), (17, 1160045), (19, 1037935), (85, 232009), (95, 207587), (323, 61055), (1615, 12211)]