21132916

素因数分解:

$2^2\times 7^3\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 43926400

約数和(自身を除く): 22793484

約数列:

[1, 2, 4, 7, 14, 28, 49, 73, 98, 146, 196, 211, 292, 343, 422, 511, 686, 844, 1022, 1372, 1477, 2044, 2954, 3577, 5908, 7154, 10339, 14308, 15403, 20678, 25039, 30806, 41356, 50078, 61612, 72373, 100156, 107821, 144746, 215642, 289492, 431284, 754747, 1509494, 3018988, 5283229, 10566458, 21132916]

約数ペア:

[(1, 21132916), (2, 10566458), (4, 5283229), (7, 3018988), (14, 1509494), (28, 754747), (49, 431284), (73, 289492), (98, 215642), (146, 144746), (196, 107821), (211, 100156), (292, 72373), (343, 61612), (422, 50078), (511, 41356), (686, 30806), (844, 25039), (1022, 20678), (1372, 15403), (1477, 14308), (2044, 10339), (2954, 7154), (3577, 5908)]