21097999

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{373}}^1$

素因数の和:634

約数の個数: 16

約数和(自身を含む): 24085600

約数和(自身を除く): 2987601

約数列:

[1, 13, 19, 229, 247, 373, 2977, 4351, 4849, 7087, 56563, 85417, 92131, 1110421, 1622923, 21097999]

約数ペア:

[(1, 21097999), (13, 1622923), (19, 1110421), (229, 92131), (247, 85417), (373, 56563), (2977, 7087), (4351, 4849)]