398106728

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{491}}^1\times {\mathrm{2357}}^1$

素因数の和:2897

約数の個数: 32

約数和(自身を含む): 765689760

約数和(自身を除く): 367583032

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 491, 982, 1964, 2357, 3928, 4714, 9428, 18856, 21113, 42226, 84452, 101351, 168904, 202702, 405404, 810808, 1157287, 2314574, 4629148, 9258296, 49763341, 99526682, 199053364, 398106728]

約数ペア:

[(1, 398106728), (2, 199053364), (4, 99526682), (8, 49763341), (43, 9258296), (86, 4629148), (172, 2314574), (344, 1157287), (491, 810808), (982, 405404), (1964, 202702), (2357, 168904), (3928, 101351), (4714, 84452), (9428, 42226), (18856, 21113)]