18080775

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 35689680

約数和(自身を除く): 17608905

約数列:

[1, 3, 5, 9, 15, 17, 25, 29, 45, 51, 75, 85, 87, 145, 153, 163, 225, 255, 261, 425, 435, 489, 493, 725, 765, 815, 1275, 1305, 1467, 1479, 2175, 2445, 2465, 2771, 3825, 4075, 4437, 4727, 6525, 7335, 7395, 8313, 12225, 12325, 13855, 14181, 22185, 23635, 24939, 36675, 36975, 41565, 42543, 69275, 70905, 80359, 110925, 118175, 124695, 207825, 212715, 241077, 354525, 401795, 623475, 723231, 1063575, 1205385, 2008975, 3616155, 6026925, 18080775]

約数ペア:

[(1, 18080775), (3, 6026925), (5, 3616155), (9, 2008975), (15, 1205385), (17, 1063575), (25, 723231), (29, 623475), (45, 401795), (51, 354525), (75, 241077), (85, 212715), (87, 207825), (145, 124695), (153, 118175), (163, 110925), (225, 80359), (255, 70905), (261, 69275), (425, 42543), (435, 41565), (489, 36975), (493, 36675), (725, 24939), (765, 23635), (815, 22185), (1275, 14181), (1305, 13855), (1467, 12325), (1479, 12225), (2175, 8313), (2445, 7395), (2465, 7335), (2771, 6525), (3825, 4727), (4075, 4437)]