646668

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 1886976

約数和(自身を除く): 1240308

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 23, 33, 36, 44, 46, 66, 69, 71, 92, 99, 132, 138, 142, 198, 207, 213, 253, 276, 284, 396, 414, 426, 506, 639, 759, 781, 828, 852, 1012, 1278, 1518, 1562, 1633, 2277, 2343, 2556, 3036, 3124, 3266, 4554, 4686, 4899, 6532, 7029, 9108, 9372, 9798, 14058, 14697, 17963, 19596, 28116, 29394, 35926, 53889, 58788, 71852, 107778, 161667, 215556, 323334, 646668]

約数ペア:

[(1, 646668), (2, 323334), (3, 215556), (4, 161667), (6, 107778), (9, 71852), (11, 58788), (12, 53889), (18, 35926), (22, 29394), (23, 28116), (33, 19596), (36, 17963), (44, 14697), (46, 14058), (66, 9798), (69, 9372), (71, 9108), (92, 7029), (99, 6532), (132, 4899), (138, 4686), (142, 4554), (198, 3266), (207, 3124), (213, 3036), (253, 2556), (276, 2343), (284, 2277), (396, 1633), (414, 1562), (426, 1518), (506, 1278), (639, 1012), (759, 852), (781, 828)]