20418268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{1493}}^1$

素因数の和:1773

約数の個数: 24

約数和(自身を含む): 38652768

約数和(自身を除く): 18234500

約数列:

[1, 2, 4, 13, 26, 52, 263, 526, 1052, 1493, 2986, 3419, 5972, 6838, 13676, 19409, 38818, 77636, 392659, 785318, 1570636, 5104567, 10209134, 20418268]

約数ペア:

[(1, 20418268), (2, 10209134), (4, 5104567), (13, 1570636), (26, 785318), (52, 392659), (263, 77636), (526, 38818), (1052, 19409), (1493, 13676), (2986, 6838), (3419, 5972)]