256419464

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 561600000

約数和(自身を除く): 305180536

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 149, 158, 298, 316, 389, 553, 596, 632, 778, 1043, 1106, 1192, 1556, 2086, 2212, 2723, 3112, 4172, 4424, 5446, 8344, 10892, 11771, 21784, 23542, 30731, 47084, 57961, 61462, 82397, 94168, 115922, 122924, 164794, 215117, 231844, 245848, 329588, 405727, 430234, 463688, 659176, 811454, 860468, 1622908, 1720936, 3245816, 4578919, 9157838, 18315676, 32052433, 36631352, 64104866, 128209732, 256419464]

約数ペア:

[(1, 256419464), (2, 128209732), (4, 64104866), (7, 36631352), (8, 32052433), (14, 18315676), (28, 9157838), (56, 4578919), (79, 3245816), (149, 1720936), (158, 1622908), (298, 860468), (316, 811454), (389, 659176), (553, 463688), (596, 430234), (632, 405727), (778, 329588), (1043, 245848), (1106, 231844), (1192, 215117), (1556, 164794), (2086, 122924), (2212, 115922), (2723, 94168), (3112, 82397), (4172, 61462), (4424, 57961), (5446, 47084), (8344, 30731), (10892, 23542), (11771, 21784)]