20857904

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19457}}^1$

素因数の和:19532

約数の個数: 20

約数和(自身を含む): 41017464

約数和(自身を除く): 20159560

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19457, 38914, 77828, 155656, 311312, 1303619, 2607238, 5214476, 10428952, 20857904]

約数ペア:

[(1, 20857904), (2, 10428952), (4, 5214476), (8, 2607238), (16, 1303619), (67, 311312), (134, 155656), (268, 77828), (536, 38914), (1072, 19457)]