251449520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1621}}^1$

素因数の和:1918

約数の個数: 80

約数和(自身を含む): 670963008

約数和(自身を除く): 419513488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 277, 280, 554, 560, 1108, 1385, 1621, 1939, 2216, 2770, 3242, 3878, 4432, 5540, 6484, 7756, 8105, 9695, 11080, 11347, 12968, 15512, 16210, 19390, 22160, 22694, 25936, 31024, 32420, 38780, 45388, 56735, 64840, 77560, 90776, 113470, 129680, 155120, 181552, 226940, 449017, 453880, 898034, 907760, 1796068, 2245085, 3143119, 3592136, 4490170, 6286238, 7184272, 8980340, 12572476, 15715595, 17960680, 25144952, 31431190, 35921360, 50289904, 62862380, 125724760, 251449520]

約数ペア:

[(1, 251449520), (2, 125724760), (4, 62862380), (5, 50289904), (7, 35921360), (8, 31431190), (10, 25144952), (14, 17960680), (16, 15715595), (20, 12572476), (28, 8980340), (35, 7184272), (40, 6286238), (56, 4490170), (70, 3592136), (80, 3143119), (112, 2245085), (140, 1796068), (277, 907760), (280, 898034), (554, 453880), (560, 449017), (1108, 226940), (1385, 181552), (1621, 155120), (1939, 129680), (2216, 113470), (2770, 90776), (3242, 77560), (3878, 64840), (4432, 56735), (5540, 45388), (6484, 38780), (7756, 32420), (8105, 31024), (9695, 25936), (11080, 22694), (11347, 22160), (12968, 19390), (15512, 16210)]