21358528

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:389

約数の個数: 56

約数和(自身を含む): 45701712

約数和(自身を除く): 24343184

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 67, 68, 134, 136, 268, 272, 293, 536, 544, 586, 1072, 1088, 1139, 1172, 2144, 2278, 2344, 4288, 4556, 4688, 4981, 9112, 9376, 9962, 18224, 18752, 19631, 19924, 36448, 39262, 39848, 72896, 78524, 79696, 157048, 159392, 314096, 318784, 333727, 628192, 667454, 1256384, 1334908, 2669816, 5339632, 10679264, 21358528]

約数ペア:

[(1, 21358528), (2, 10679264), (4, 5339632), (8, 2669816), (16, 1334908), (17, 1256384), (32, 667454), (34, 628192), (64, 333727), (67, 318784), (68, 314096), (134, 159392), (136, 157048), (268, 79696), (272, 78524), (293, 72896), (536, 39848), (544, 39262), (586, 36448), (1072, 19924), (1088, 19631), (1139, 18752), (1172, 18224), (2144, 9962), (2278, 9376), (2344, 9112), (4288, 4981), (4556, 4688)]