21012398

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{4283}}^1$

素因数の和:4519

約数の個数: 16

約数和(自身を含む): 34546176

約数和(自身を除く): 13533778

約数列:

[1, 2, 11, 22, 223, 446, 2453, 4283, 4906, 8566, 47113, 94226, 955109, 1910218, 10506199, 21012398]

約数ペア:

[(1, 21012398), (2, 10506199), (11, 1910218), (22, 955109), (223, 94226), (446, 47113), (2453, 8566), (4283, 4906)]