20972675

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:755

約数の個数: 24

約数和(自身を含む): 27825600

約数和(自身を除く): 6852925

約数列:

[1, 5, 19, 25, 67, 95, 335, 475, 659, 1273, 1675, 3295, 6365, 12521, 16475, 31825, 44153, 62605, 220765, 313025, 838907, 1103825, 4194535, 20972675]

約数ペア:

[(1, 20972675), (5, 4194535), (19, 1103825), (25, 838907), (67, 313025), (95, 220765), (335, 62605), (475, 44153), (659, 31825), (1273, 16475), (1675, 12521), (3295, 6365)]