20790272

素因数分解:

$2^{10}\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:356

約数の個数: 44

約数和(自身を含む): 42250080

約数和(自身を除く): 21459808

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 128, 158, 256, 257, 316, 512, 514, 632, 1024, 1028, 1264, 2056, 2528, 4112, 5056, 8224, 10112, 16448, 20224, 20303, 32896, 40448, 40606, 65792, 80896, 81212, 131584, 162424, 263168, 324848, 649696, 1299392, 2598784, 5197568, 10395136, 20790272]

約数ペア:

[(1, 20790272), (2, 10395136), (4, 5197568), (8, 2598784), (16, 1299392), (32, 649696), (64, 324848), (79, 263168), (128, 162424), (158, 131584), (256, 81212), (257, 80896), (316, 65792), (512, 40606), (514, 40448), (632, 32896), (1024, 20303), (1028, 20224), (1264, 16448), (2056, 10112), (2528, 8224), (4112, 5056)]