18785728

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{337}}^1$

素因数の和:429

約数の個数: 56

約数和(自身を含む): 40865552

約数和(自身を除く): 22079824

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 67, 104, 134, 208, 268, 337, 416, 536, 674, 832, 871, 1072, 1348, 1742, 2144, 2696, 3484, 4288, 4381, 5392, 6968, 8762, 10784, 13936, 17524, 21568, 22579, 27872, 35048, 45158, 55744, 70096, 90316, 140192, 180632, 280384, 293527, 361264, 587054, 722528, 1174108, 1445056, 2348216, 4696432, 9392864, 18785728]

約数ペア:

[(1, 18785728), (2, 9392864), (4, 4696432), (8, 2348216), (13, 1445056), (16, 1174108), (26, 722528), (32, 587054), (52, 361264), (64, 293527), (67, 280384), (104, 180632), (134, 140192), (208, 90316), (268, 70096), (337, 55744), (416, 45158), (536, 35048), (674, 27872), (832, 22579), (871, 21568), (1072, 17524), (1348, 13936), (1742, 10784), (2144, 8762), (2696, 6968), (3484, 5392), (4288, 4381)]