21115744

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{263}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 45172512

約数和(自身を除く): 24056768

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 193, 208, 263, 386, 416, 526, 772, 1052, 1544, 2104, 2509, 3088, 3419, 4208, 5018, 6176, 6838, 8416, 10036, 13676, 20072, 27352, 40144, 50759, 54704, 80288, 101518, 109408, 203036, 406072, 659867, 812144, 1319734, 1624288, 2639468, 5278936, 10557872, 21115744]

約数ペア:

[(1, 21115744), (2, 10557872), (4, 5278936), (8, 2639468), (13, 1624288), (16, 1319734), (26, 812144), (32, 659867), (52, 406072), (104, 203036), (193, 109408), (208, 101518), (263, 80288), (386, 54704), (416, 50759), (526, 40144), (772, 27352), (1052, 20072), (1544, 13676), (2104, 10036), (2509, 8416), (3088, 6838), (3419, 6176), (4208, 5018)]