254231180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^2\times {\mathrm{193}}^1$

素因数の和:403

約数の個数: 72

約数和(自身を含む): 619704288

約数和(自身を除く): 365473108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 193, 194, 386, 388, 485, 679, 772, 965, 970, 1351, 1358, 1930, 1940, 2702, 2716, 3395, 3860, 5404, 6755, 6790, 9409, 13510, 13580, 18721, 18818, 27020, 37442, 37636, 47045, 65863, 74884, 93605, 94090, 131047, 131726, 187210, 188180, 262094, 263452, 329315, 374420, 524188, 655235, 658630, 1310470, 1317260, 1815937, 2620940, 3631874, 7263748, 9079685, 12711559, 18159370, 25423118, 36318740, 50846236, 63557795, 127115590, 254231180]

約数ペア:

[(1, 254231180), (2, 127115590), (4, 63557795), (5, 50846236), (7, 36318740), (10, 25423118), (14, 18159370), (20, 12711559), (28, 9079685), (35, 7263748), (70, 3631874), (97, 2620940), (140, 1815937), (193, 1317260), (194, 1310470), (386, 658630), (388, 655235), (485, 524188), (679, 374420), (772, 329315), (965, 263452), (970, 262094), (1351, 188180), (1358, 187210), (1930, 131726), (1940, 131047), (2702, 94090), (2716, 93605), (3395, 74884), (3860, 65863), (5404, 47045), (6755, 37636), (6790, 37442), (9409, 27020), (13510, 18818), (13580, 18721)]