251286435

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{491}}^1$

素因数の和:745

約数の個数: 64

約数和(自身を含む): 476098560

約数和(自身を除く): 224812125

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 223, 255, 459, 491, 669, 765, 1115, 1473, 2007, 2295, 2455, 3345, 3791, 4419, 6021, 7365, 8347, 10035, 11373, 13257, 18955, 22095, 25041, 30105, 34119, 41735, 56865, 66285, 75123, 102357, 109493, 125205, 170595, 225369, 328479, 375615, 511785, 547465, 985437, 1126845, 1642395, 1861381, 2956311, 4927185, 5584143, 9306905, 14781555, 16752429, 27920715, 50257287, 83762145, 251286435]

約数ペア:

[(1, 251286435), (3, 83762145), (5, 50257287), (9, 27920715), (15, 16752429), (17, 14781555), (27, 9306905), (45, 5584143), (51, 4927185), (85, 2956311), (135, 1861381), (153, 1642395), (223, 1126845), (255, 985437), (459, 547465), (491, 511785), (669, 375615), (765, 328479), (1115, 225369), (1473, 170595), (2007, 125205), (2295, 109493), (2455, 102357), (3345, 75123), (3791, 66285), (4419, 56865), (6021, 41735), (7365, 34119), (8347, 30105), (10035, 25041), (11373, 22095), (13257, 18955)]