18209125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:103

約数の個数: 64

約数和(自身を含む): 28304640

約数和(自身を除く): 10095515

約数列:

[1, 5, 11, 17, 19, 25, 41, 55, 85, 95, 125, 187, 205, 209, 275, 323, 425, 451, 475, 697, 779, 935, 1025, 1045, 1375, 1615, 2125, 2255, 2375, 3485, 3553, 3895, 4675, 5125, 5225, 7667, 8075, 8569, 11275, 13243, 17425, 17765, 19475, 23375, 26125, 38335, 40375, 42845, 56375, 66215, 87125, 88825, 97375, 145673, 191675, 214225, 331075, 444125, 728365, 958375, 1071125, 1655375, 3641825, 18209125]

約数ペア:

[(1, 18209125), (5, 3641825), (11, 1655375), (17, 1071125), (19, 958375), (25, 728365), (41, 444125), (55, 331075), (85, 214225), (95, 191675), (125, 145673), (187, 97375), (205, 88825), (209, 87125), (275, 66215), (323, 56375), (425, 42845), (451, 40375), (475, 38335), (697, 26125), (779, 23375), (935, 19475), (1025, 17765), (1045, 17425), (1375, 13243), (1615, 11275), (2125, 8569), (2255, 8075), (2375, 7667), (3485, 5225), (3553, 5125), (3895, 4675)]