217689976

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{54751}}^1$

素因数の和:54835

約数の個数: 32

約数和(自身を含む): 473057280

約数和(自身を除く): 255367304

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 54751, 109502, 219004, 383257, 438008, 766514, 1533028, 3066056, 3887321, 7774642, 15549284, 27211247, 31098568, 54422494, 108844988, 217689976]

約数ペア:

[(1, 217689976), (2, 108844988), (4, 54422494), (7, 31098568), (8, 27211247), (14, 15549284), (28, 7774642), (56, 3887321), (71, 3066056), (142, 1533028), (284, 766514), (497, 438008), (568, 383257), (994, 219004), (1988, 109502), (3976, 54751)]