666328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 1386000

約数和(自身を除く): 719672

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 149, 172, 298, 344, 559, 596, 1118, 1192, 1937, 2236, 3874, 4472, 6407, 7748, 12814, 15496, 25628, 51256, 83291, 166582, 333164, 666328]

約数ペア:

[(1, 666328), (2, 333164), (4, 166582), (8, 83291), (13, 51256), (26, 25628), (43, 15496), (52, 12814), (86, 7748), (104, 6407), (149, 4472), (172, 3874), (298, 2236), (344, 1937), (559, 1192), (596, 1118)]