19979675

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{887}}^1$

素因数の和:967

約数の個数: 24

約数和(自身を含む): 26757216

約数和(自身を除く): 6777541

約数列:

[1, 5, 17, 25, 53, 85, 265, 425, 887, 901, 1325, 4435, 4505, 15079, 22175, 22525, 47011, 75395, 235055, 376975, 799187, 1175275, 3995935, 19979675]

約数ペア:

[(1, 19979675), (5, 3995935), (17, 1175275), (25, 799187), (53, 376975), (85, 235055), (265, 75395), (425, 47011), (887, 22525), (901, 22175), (1325, 15079), (4435, 4505)]