21695716

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{571}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 46126080

約数和(自身を除く): 24430364

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 59, 92, 118, 161, 236, 322, 413, 571, 644, 826, 1142, 1357, 1652, 2284, 2714, 3997, 5428, 7994, 9499, 13133, 15988, 18998, 26266, 33689, 37996, 52532, 67378, 91931, 134756, 183862, 235823, 367724, 471646, 774847, 943292, 1549694, 3099388, 5423929, 10847858, 21695716]

約数ペア:

[(1, 21695716), (2, 10847858), (4, 5423929), (7, 3099388), (14, 1549694), (23, 943292), (28, 774847), (46, 471646), (59, 367724), (92, 235823), (118, 183862), (161, 134756), (236, 91931), (322, 67378), (413, 52532), (571, 37996), (644, 33689), (826, 26266), (1142, 18998), (1357, 15988), (1652, 13133), (2284, 9499), (2714, 7994), (3997, 5428)]