218935720

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{11239}}^1$

素因数の和:11737

約数の個数: 32

約数和(自身を含む): 493660800

約数和(自身を除く): 274725080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4870, 9740, 11239, 19480, 22478, 44956, 56195, 89912, 112390, 224780, 449560, 5473393, 10946786, 21893572, 27366965, 43787144, 54733930, 109467860, 218935720]

約数ペア:

[(1, 218935720), (2, 109467860), (4, 54733930), (5, 43787144), (8, 27366965), (10, 21893572), (20, 10946786), (40, 5473393), (487, 449560), (974, 224780), (1948, 112390), (2435, 89912), (3896, 56195), (4870, 44956), (9740, 22478), (11239, 19480)]