625005

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:90

約数の個数: 48

約数和(自身を含む): 1235520

約数和(自身を除く): 610515

約数列:

[1, 3, 5, 9, 15, 17, 19, 43, 45, 51, 57, 85, 95, 129, 153, 171, 215, 255, 285, 323, 387, 645, 731, 765, 817, 855, 969, 1615, 1935, 2193, 2451, 2907, 3655, 4085, 4845, 6579, 7353, 10965, 12255, 13889, 14535, 32895, 36765, 41667, 69445, 125001, 208335, 625005]

約数ペア:

[(1, 625005), (3, 208335), (5, 125001), (9, 69445), (15, 41667), (17, 36765), (19, 32895), (43, 14535), (45, 13889), (51, 12255), (57, 10965), (85, 7353), (95, 6579), (129, 4845), (153, 4085), (171, 3655), (215, 2907), (255, 2451), (285, 2193), (323, 1935), (387, 1615), (645, 969), (731, 855), (765, 817)]