21660968

素因数分解:

$2^3\times 7^1\times {\mathrm{613}}^1\times {\mathrm{631}}^1$

素因数の和:1257

約数の個数: 32

約数和(自身を含む): 46565760

約数和(自身を除く): 24904792

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 613, 631, 1226, 1262, 2452, 2524, 4291, 4417, 4904, 5048, 8582, 8834, 17164, 17668, 34328, 35336, 386803, 773606, 1547212, 2707621, 3094424, 5415242, 10830484, 21660968]

約数ペア:

[(1, 21660968), (2, 10830484), (4, 5415242), (7, 3094424), (8, 2707621), (14, 1547212), (28, 773606), (56, 386803), (613, 35336), (631, 34328), (1226, 17668), (1262, 17164), (2452, 8834), (2524, 8582), (4291, 5048), (4417, 4904)]