21051544

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138497}}^1$

素因数の和:138522

約数の個数: 16

約数和(自身を含む): 41549400

約数和(自身を除く): 20497856

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138497, 276994, 553988, 1107976, 2631443, 5262886, 10525772, 21051544]

約数ペア:

[(1, 21051544), (2, 10525772), (4, 5262886), (8, 2631443), (19, 1107976), (38, 553988), (76, 276994), (152, 138497)]