21548464

素因数分解:

$2^4\times 7^1\times {\mathrm{421}}^1\times {\mathrm{457}}^1$

素因数の和:893

約数の個数: 40

約数和(自身を含む): 47932448

約数和(自身を除く): 26383984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 421, 457, 842, 914, 1684, 1828, 2947, 3199, 3368, 3656, 5894, 6398, 6736, 7312, 11788, 12796, 23576, 25592, 47152, 51184, 192397, 384794, 769588, 1346779, 1539176, 2693558, 3078352, 5387116, 10774232, 21548464]

約数ペア:

[(1, 21548464), (2, 10774232), (4, 5387116), (7, 3078352), (8, 2693558), (14, 1539176), (16, 1346779), (28, 769588), (56, 384794), (112, 192397), (421, 51184), (457, 47152), (842, 25592), (914, 23576), (1684, 12796), (1828, 11788), (2947, 7312), (3199, 6736), (3368, 6398), (3656, 5894)]