21105792

素因数分解:

$2^7\times 3^3\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:251

約数の個数: 128

約数和(自身を含む): 64627200

約数和(自身を除く): 43521408

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 32, 36, 48, 54, 62, 64, 72, 93, 96, 108, 124, 128, 144, 186, 192, 197, 216, 248, 279, 288, 372, 384, 394, 432, 496, 558, 576, 591, 744, 788, 837, 864, 992, 1116, 1152, 1182, 1488, 1576, 1674, 1728, 1773, 1984, 2232, 2364, 2976, 3152, 3348, 3456, 3546, 3968, 4464, 4728, 5319, 5952, 6107, 6304, 6696, 7092, 8928, 9456, 10638, 11904, 12214, 12608, 13392, 14184, 17856, 18321, 18912, 21276, 24428, 25216, 26784, 28368, 35712, 36642, 37824, 42552, 48856, 53568, 54963, 56736, 73284, 75648, 85104, 97712, 107136, 109926, 113472, 146568, 164889, 170208, 195424, 219852, 226944, 293136, 329778, 340416, 390848, 439704, 586272, 659556, 680832, 781696, 879408, 1172544, 1319112, 1758816, 2345088, 2638224, 3517632, 5276448, 7035264, 10552896, 21105792]

約数ペア:

[(1, 21105792), (2, 10552896), (3, 7035264), (4, 5276448), (6, 3517632), (8, 2638224), (9, 2345088), (12, 1758816), (16, 1319112), (18, 1172544), (24, 879408), (27, 781696), (31, 680832), (32, 659556), (36, 586272), (48, 439704), (54, 390848), (62, 340416), (64, 329778), (72, 293136), (93, 226944), (96, 219852), (108, 195424), (124, 170208), (128, 164889), (144, 146568), (186, 113472), (192, 109926), (197, 107136), (216, 97712), (248, 85104), (279, 75648), (288, 73284), (372, 56736), (384, 54963), (394, 53568), (432, 48856), (496, 42552), (558, 37824), (576, 36642), (591, 35712), (744, 28368), (788, 26784), (837, 25216), (864, 24428), (992, 21276), (1116, 18912), (1152, 18321), (1182, 17856), (1488, 14184), (1576, 13392), (1674, 12608), (1728, 12214), (1773, 11904), (1984, 10638), (2232, 9456), (2364, 8928), (2976, 7092), (3152, 6696), (3348, 6304), (3456, 6107), (3546, 5952), (3968, 5319), (4464, 4728)]