19712405

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:273

約数の個数: 24

約数和(自身を含む): 25493472

約数和(自身を除く): 5781067

約数列:

[1, 5, 19, 67, 95, 163, 335, 361, 815, 1273, 1805, 3097, 6365, 10921, 15485, 24187, 54605, 58843, 120935, 207499, 294215, 1037495, 3942481, 19712405]

約数ペア:

[(1, 19712405), (5, 3942481), (19, 1037495), (67, 294215), (95, 207499), (163, 120935), (335, 58843), (361, 54605), (815, 24187), (1273, 15485), (1805, 10921), (3097, 6365)]