256217500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{11}}^4$

素因数の和:75

約数の個数: 150

約数和(自身を含む): 704368280

約数和(自身を除く): 448150780

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 121, 125, 140, 154, 175, 220, 242, 250, 275, 308, 350, 385, 484, 500, 550, 605, 625, 700, 770, 847, 875, 1100, 1210, 1250, 1331, 1375, 1540, 1694, 1750, 1925, 2420, 2500, 2662, 2750, 3025, 3388, 3500, 3850, 4235, 4375, 5324, 5500, 6050, 6655, 6875, 7700, 8470, 8750, 9317, 9625, 12100, 13310, 13750, 14641, 15125, 16940, 17500, 18634, 19250, 21175, 26620, 27500, 29282, 30250, 33275, 37268, 38500, 42350, 46585, 48125, 58564, 60500, 66550, 73205, 75625, 84700, 93170, 96250, 102487, 105875, 133100, 146410, 151250, 166375, 186340, 192500, 204974, 211750, 232925, 292820, 302500, 332750, 366025, 409948, 423500, 465850, 512435, 529375, 665500, 732050, 831875, 931700, 1024870, 1058750, 1164625, 1464100, 1663750, 1830125, 2049740, 2117500, 2329250, 2562175, 3327500, 3660250, 4658500, 5124350, 5823125, 7320500, 9150625, 10248700, 11646250, 12810875, 18301250, 23292500, 25621750, 36602500, 51243500, 64054375, 128108750, 256217500]

約数ペア:

[(1, 256217500), (2, 128108750), (4, 64054375), (5, 51243500), (7, 36602500), (10, 25621750), (11, 23292500), (14, 18301250), (20, 12810875), (22, 11646250), (25, 10248700), (28, 9150625), (35, 7320500), (44, 5823125), (50, 5124350), (55, 4658500), (70, 3660250), (77, 3327500), (100, 2562175), (110, 2329250), (121, 2117500), (125, 2049740), (140, 1830125), (154, 1663750), (175, 1464100), (220, 1164625), (242, 1058750), (250, 1024870), (275, 931700), (308, 831875), (350, 732050), (385, 665500), (484, 529375), (500, 512435), (550, 465850), (605, 423500), (625, 409948), (700, 366025), (770, 332750), (847, 302500), (875, 292820), (1100, 232925), (1210, 211750), (1250, 204974), (1331, 192500), (1375, 186340), (1540, 166375), (1694, 151250), (1750, 146410), (1925, 133100), (2420, 105875), (2500, 102487), (2662, 96250), (2750, 93170), (3025, 84700), (3388, 75625), (3500, 73205), (3850, 66550), (4235, 60500), (4375, 58564), (5324, 48125), (5500, 46585), (6050, 42350), (6655, 38500), (6875, 37268), (7700, 33275), (8470, 30250), (8750, 29282), (9317, 27500), (9625, 26620), (12100, 21175), (13310, 19250), (13750, 18634), (14641, 17500), (15125, 16940)]