21864095

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:607

約数の個数: 24

約数和(自身を含む): 29302560

約数和(自身を除く): 7438465

約数列:

[1, 5, 11, 55, 71, 121, 355, 509, 605, 781, 2545, 3905, 5599, 8591, 27995, 36139, 42955, 61589, 180695, 307945, 397529, 1987645, 4372819, 21864095]

約数ペア:

[(1, 21864095), (5, 4372819), (11, 1987645), (55, 397529), (71, 307945), (121, 180695), (355, 61589), (509, 42955), (605, 36139), (781, 27995), (2545, 8591), (3905, 5599)]