855865780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{1787}}^1$

素因数の和:2125

約数の個数: 96

約数和(自身を含む): 2249275392

約数和(自身を除く): 1393409612

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 311, 385, 622, 770, 1244, 1540, 1555, 1787, 2177, 3110, 3421, 3574, 4354, 6220, 6842, 7148, 8708, 8935, 10885, 12509, 13684, 17105, 17870, 19657, 21770, 23947, 25018, 34210, 35740, 39314, 43540, 47894, 50036, 62545, 68420, 78628, 95788, 98285, 119735, 125090, 137599, 196570, 239470, 250180, 275198, 393140, 478940, 550396, 555757, 687995, 1111514, 1375990, 2223028, 2751980, 2778785, 3890299, 5557570, 6113327, 7780598, 11115140, 12226654, 15561196, 19451495, 24453308, 30566635, 38902990, 42793289, 61133270, 77805980, 85586578, 122266540, 171173156, 213966445, 427932890, 855865780]

約数ペア:

[(1, 855865780), (2, 427932890), (4, 213966445), (5, 171173156), (7, 122266540), (10, 85586578), (11, 77805980), (14, 61133270), (20, 42793289), (22, 38902990), (28, 30566635), (35, 24453308), (44, 19451495), (55, 15561196), (70, 12226654), (77, 11115140), (110, 7780598), (140, 6113327), (154, 5557570), (220, 3890299), (308, 2778785), (311, 2751980), (385, 2223028), (622, 1375990), (770, 1111514), (1244, 687995), (1540, 555757), (1555, 550396), (1787, 478940), (2177, 393140), (3110, 275198), (3421, 250180), (3574, 239470), (4354, 196570), (6220, 137599), (6842, 125090), (7148, 119735), (8708, 98285), (8935, 95788), (10885, 78628), (12509, 68420), (13684, 62545), (17105, 50036), (17870, 47894), (19657, 43540), (21770, 39314), (23947, 35740), (25018, 34210)]