21791824

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{709}}^1$

素因数の和:847

約数の個数: 40

約数和(自身を含む): 45164520

約数和(自身を除く): 23372696

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 113, 136, 226, 272, 452, 709, 904, 1418, 1808, 1921, 2836, 3842, 5672, 7684, 11344, 12053, 15368, 24106, 30736, 48212, 80117, 96424, 160234, 192848, 320468, 640936, 1281872, 1361989, 2723978, 5447956, 10895912, 21791824]

約数ペア:

[(1, 21791824), (2, 10895912), (4, 5447956), (8, 2723978), (16, 1361989), (17, 1281872), (34, 640936), (68, 320468), (113, 192848), (136, 160234), (226, 96424), (272, 80117), (452, 48212), (709, 30736), (904, 24106), (1418, 15368), (1808, 12053), (1921, 11344), (2836, 7684), (3842, 5672)]