20783812

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{547}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 44190720

約数和(自身を除く): 23406908

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 59, 92, 118, 161, 236, 322, 413, 547, 644, 826, 1094, 1357, 1652, 2188, 2714, 3829, 5428, 7658, 9499, 12581, 15316, 18998, 25162, 32273, 37996, 50324, 64546, 88067, 129092, 176134, 225911, 352268, 451822, 742279, 903644, 1484558, 2969116, 5195953, 10391906, 20783812]

約数ペア:

[(1, 20783812), (2, 10391906), (4, 5195953), (7, 2969116), (14, 1484558), (23, 903644), (28, 742279), (46, 451822), (59, 352268), (92, 225911), (118, 176134), (161, 129092), (236, 88067), (322, 64546), (413, 50324), (547, 37996), (644, 32273), (826, 25162), (1094, 18998), (1357, 15316), (1652, 12581), (2188, 9499), (2714, 7658), (3829, 5428)]