21897808

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3413}}^1$

素因数の和:3822

約数の個数: 20

約数和(自身を含む): 42545268

約数和(自身を除く): 20647460

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 3413, 6416, 6826, 13652, 27304, 54608, 1368613, 2737226, 5474452, 10948904, 21897808]

約数ペア:

[(1, 21897808), (2, 10948904), (4, 5474452), (8, 2737226), (16, 1368613), (401, 54608), (802, 27304), (1604, 13652), (3208, 6826), (3413, 6416)]