21717488

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{397}}^1$

素因数の和:681

約数の個数: 40

約数和(自身を含む): 45601248

約数和(自身を除く): 23883760

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 263, 397, 526, 794, 1052, 1588, 2104, 3176, 3419, 4208, 5161, 6352, 6838, 10322, 13676, 20644, 27352, 41288, 54704, 82576, 104411, 208822, 417644, 835288, 1357343, 1670576, 2714686, 5429372, 10858744, 21717488]

約数ペア:

[(1, 21717488), (2, 10858744), (4, 5429372), (8, 2714686), (13, 1670576), (16, 1357343), (26, 835288), (52, 417644), (104, 208822), (208, 104411), (263, 82576), (397, 54704), (526, 41288), (794, 27352), (1052, 20644), (1588, 13676), (2104, 10322), (3176, 6838), (3419, 6352), (4208, 5161)]