21717040

素因数分解:

$2^4\times 5^1\times {\mathrm{271463}}^1$

素因数の和:271476

約数の個数: 20

約数和(自身を含む): 50492304

約数和(自身を除く): 28775264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271463, 542926, 1085852, 1357315, 2171704, 2714630, 4343408, 5429260, 10858520, 21717040]

約数ペア:

[(1, 21717040), (2, 10858520), (4, 5429260), (5, 4343408), (8, 2714630), (10, 2171704), (16, 1357315), (20, 1085852), (40, 542926), (80, 271463)]