278380389

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{353}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 460211328

約数和(自身を除く): 181830939

約数列:

[1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 353, 357, 799, 987, 1059, 2209, 2397, 2471, 5593, 6001, 6627, 7413, 15463, 16591, 16779, 18003, 37553, 42007, 46389, 49773, 112659, 116137, 126021, 262871, 282047, 348411, 779777, 788613, 846141, 1974329, 2339331, 5458439, 5922987, 13256209, 16375317, 39768627, 92793463, 278380389]

約数ペア:

[(1, 278380389), (3, 92793463), (7, 39768627), (17, 16375317), (21, 13256209), (47, 5922987), (51, 5458439), (119, 2339331), (141, 1974329), (329, 846141), (353, 788613), (357, 779777), (799, 348411), (987, 282047), (1059, 262871), (2209, 126021), (2397, 116137), (2471, 112659), (5593, 49773), (6001, 46389), (6627, 42007), (7413, 37553), (15463, 18003), (16591, 16779)]