21838173

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2803}}^1$

素因数の和:2873

約数の個数: 24

約数和(自身を含む): 34522848

約数和(自身を除く): 12684675

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2597, 2803, 7791, 8409, 19621, 58863, 137347, 148559, 412041, 445677, 1039913, 3119739, 7279391, 21838173]

約数ペア:

[(1, 21838173), (3, 7279391), (7, 3119739), (21, 1039913), (49, 445677), (53, 412041), (147, 148559), (159, 137347), (371, 58863), (1113, 19621), (2597, 8409), (2803, 7791)]