21196671

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10322049

約数列:

[1, 3, 17, 37, 47, 51, 111, 141, 239, 629, 717, 799, 1739, 1887, 2397, 4063, 5217, 8843, 11233, 12189, 26529, 29563, 33699, 88689, 150331, 190961, 415621, 450993, 572883, 1246863, 7065557, 21196671]

約数ペア:

[(1, 21196671), (3, 7065557), (17, 1246863), (37, 572883), (47, 450993), (51, 415621), (111, 190961), (141, 150331), (239, 88689), (629, 33699), (717, 29563), (799, 26529), (1739, 12189), (1887, 11233), (2397, 8843), (4063, 5217)]