21726881

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:293

約数の個数: 24

約数和(自身を含む): 25714752

約数和(自身を除く): 3987871

約数列:

[1, 11, 23, 37, 121, 211, 253, 407, 851, 2321, 2783, 4477, 4853, 7807, 9361, 25531, 53383, 85877, 102971, 179561, 587213, 944647, 1975171, 21726881]

約数ペア:

[(1, 21726881), (11, 1975171), (23, 944647), (37, 587213), (121, 179561), (211, 102971), (253, 85877), (407, 53383), (851, 25531), (2321, 9361), (2783, 7807), (4477, 4853)]