644742

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:82

約数の個数: 72

約数和(自身を含む): 1760616

約数和(自身を除く): 1115874

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 43, 49, 51, 63, 86, 98, 102, 119, 126, 129, 147, 153, 238, 258, 294, 301, 306, 357, 387, 441, 602, 714, 731, 774, 833, 882, 903, 1071, 1462, 1666, 1806, 2107, 2142, 2193, 2499, 2709, 4214, 4386, 4998, 5117, 5418, 6321, 6579, 7497, 10234, 12642, 13158, 14994, 15351, 18963, 30702, 35819, 37926, 46053, 71638, 92106, 107457, 214914, 322371, 644742]

約数ペア:

[(1, 644742), (2, 322371), (3, 214914), (6, 107457), (7, 92106), (9, 71638), (14, 46053), (17, 37926), (18, 35819), (21, 30702), (34, 18963), (42, 15351), (43, 14994), (49, 13158), (51, 12642), (63, 10234), (86, 7497), (98, 6579), (102, 6321), (119, 5418), (126, 5117), (129, 4998), (147, 4386), (153, 4214), (238, 2709), (258, 2499), (294, 2193), (301, 2142), (306, 2107), (357, 1806), (387, 1666), (441, 1462), (602, 1071), (714, 903), (731, 882), (774, 833)]