684640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:415

約数の個数: 48

約数和(自身を含む): 1769040

約数和(自身を除く): 1084400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 389, 440, 778, 880, 1556, 1760, 1945, 3112, 3890, 4279, 6224, 7780, 8558, 12448, 15560, 17116, 21395, 31120, 34232, 42790, 62240, 68464, 85580, 136928, 171160, 342320, 684640]

約数ペア:

[(1, 684640), (2, 342320), (4, 171160), (5, 136928), (8, 85580), (10, 68464), (11, 62240), (16, 42790), (20, 34232), (22, 31120), (32, 21395), (40, 17116), (44, 15560), (55, 12448), (80, 8558), (88, 7780), (110, 6224), (160, 4279), (176, 3890), (220, 3112), (352, 1945), (389, 1760), (440, 1556), (778, 880)]