21377972

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2239}}^1$

素因数の和:2292

約数の個数: 48

約数和(自身を含む): 48168960

約数和(自身を除く): 26790988

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 308, 341, 434, 682, 868, 1364, 2239, 2387, 4478, 4774, 8956, 9548, 15673, 24629, 31346, 49258, 62692, 69409, 98516, 138818, 172403, 277636, 344806, 485863, 689612, 763499, 971726, 1526998, 1943452, 3053996, 5344493, 10688986, 21377972]

約数ペア:

[(1, 21377972), (2, 10688986), (4, 5344493), (7, 3053996), (11, 1943452), (14, 1526998), (22, 971726), (28, 763499), (31, 689612), (44, 485863), (62, 344806), (77, 277636), (124, 172403), (154, 138818), (217, 98516), (308, 69409), (341, 62692), (434, 49258), (682, 31346), (868, 24629), (1364, 15673), (2239, 9548), (2387, 8956), (4478, 4774)]