278046440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{311}}^1$

素因数の和:463

約数の個数: 128

約数和(自身を含む): 747601920

約数和(自身を除く): 469555480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 103, 124, 140, 155, 206, 217, 248, 280, 310, 311, 412, 434, 515, 620, 622, 721, 824, 868, 1030, 1085, 1240, 1244, 1442, 1555, 1736, 2060, 2170, 2177, 2488, 2884, 3110, 3193, 3605, 4120, 4340, 4354, 5768, 6220, 6386, 7210, 8680, 8708, 9641, 10885, 12440, 12772, 14420, 15965, 17416, 19282, 21770, 22351, 25544, 28840, 31930, 32033, 38564, 43540, 44702, 48205, 63860, 64066, 67487, 77128, 87080, 89404, 96410, 111755, 127720, 128132, 134974, 160165, 178808, 192820, 223510, 224231, 256264, 269948, 320330, 337435, 385640, 447020, 448462, 539896, 640660, 674870, 894040, 896924, 993023, 1121155, 1281320, 1349740, 1793848, 1986046, 2242310, 2699480, 3972092, 4484620, 4965115, 6951161, 7944184, 8969240, 9930230, 13902322, 19860460, 27804644, 34755805, 39720920, 55609288, 69511610, 139023220, 278046440]

約数ペア:

[(1, 278046440), (2, 139023220), (4, 69511610), (5, 55609288), (7, 39720920), (8, 34755805), (10, 27804644), (14, 19860460), (20, 13902322), (28, 9930230), (31, 8969240), (35, 7944184), (40, 6951161), (56, 4965115), (62, 4484620), (70, 3972092), (103, 2699480), (124, 2242310), (140, 1986046), (155, 1793848), (206, 1349740), (217, 1281320), (248, 1121155), (280, 993023), (310, 896924), (311, 894040), (412, 674870), (434, 640660), (515, 539896), (620, 448462), (622, 447020), (721, 385640), (824, 337435), (868, 320330), (1030, 269948), (1085, 256264), (1240, 224231), (1244, 223510), (1442, 192820), (1555, 178808), (1736, 160165), (2060, 134974), (2170, 128132), (2177, 127720), (2488, 111755), (2884, 96410), (3110, 89404), (3193, 87080), (3605, 77128), (4120, 67487), (4340, 64066), (4354, 63860), (5768, 48205), (6220, 44702), (6386, 43540), (7210, 38564), (8680, 32033), (8708, 31930), (9641, 28840), (10885, 25544), (12440, 22351), (12772, 21770), (14420, 19282), (15965, 17416)]