21023025

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14753}}^1$

素因数の和:14785

約数の個数: 24

約数和(自身を含む): 36589920

約数和(自身を除く): 15566895

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14753, 44259, 73765, 221295, 280307, 368825, 840921, 1106475, 1401535, 4204605, 7007675, 21023025]

約数ペア:

[(1, 21023025), (3, 7007675), (5, 4204605), (15, 1401535), (19, 1106475), (25, 840921), (57, 368825), (75, 280307), (95, 221295), (285, 73765), (475, 44259), (1425, 14753)]