28907781

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 45323520

約数和(自身を除く): 16415739

約数列:

[1, 3, 7, 21, 73, 109, 173, 219, 327, 511, 519, 763, 1211, 1533, 2289, 3633, 7957, 12629, 18857, 23871, 37887, 55699, 56571, 88403, 131999, 167097, 265209, 395997, 1376561, 4129683, 9635927, 28907781]

約数ペア:

[(1, 28907781), (3, 9635927), (7, 4129683), (21, 1376561), (73, 395997), (109, 265209), (173, 167097), (219, 131999), (327, 88403), (511, 56571), (519, 55699), (763, 37887), (1211, 23871), (1533, 18857), (2289, 12629), (3633, 7957)]