21557144

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^2\times {\mathrm{229}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 47554800

約数和(自身を除く): 25997656

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 164, 229, 287, 328, 458, 574, 916, 1148, 1603, 1681, 1832, 2296, 3206, 3362, 6412, 6724, 9389, 11767, 12824, 13448, 18778, 23534, 37556, 47068, 65723, 75112, 94136, 131446, 262892, 384949, 525784, 769898, 1539796, 2694643, 3079592, 5389286, 10778572, 21557144]

約数ペア:

[(1, 21557144), (2, 10778572), (4, 5389286), (7, 3079592), (8, 2694643), (14, 1539796), (28, 769898), (41, 525784), (56, 384949), (82, 262892), (164, 131446), (229, 94136), (287, 75112), (328, 65723), (458, 47068), (574, 37556), (916, 23534), (1148, 18778), (1603, 13448), (1681, 12824), (1832, 11767), (2296, 9389), (3206, 6724), (3362, 6412)]