211042960

素因数分解:

$2^4\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{1997}}^1$

素因数の和:3331

約数の個数: 40

約数和(自身を含む): 491292216

約数和(自身を除く): 280249256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1321, 1997, 2642, 3994, 5284, 6605, 7988, 9985, 10568, 13210, 15976, 19970, 21136, 26420, 31952, 39940, 52840, 79880, 105680, 159760, 2638037, 5276074, 10552148, 13190185, 21104296, 26380370, 42208592, 52760740, 105521480, 211042960]

約数ペア:

[(1, 211042960), (2, 105521480), (4, 52760740), (5, 42208592), (8, 26380370), (10, 21104296), (16, 13190185), (20, 10552148), (40, 5276074), (80, 2638037), (1321, 159760), (1997, 105680), (2642, 79880), (3994, 52840), (5284, 39940), (6605, 31952), (7988, 26420), (9985, 21136), (10568, 19970), (13210, 15976)]