21947307

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{617}}^1$

素因数の和:858

約数の個数: 16

約数和(自身を含む): 29901312

約数和(自身を除く): 7954005

約数列:

[1, 3, 71, 167, 213, 501, 617, 1851, 11857, 35571, 43807, 103039, 131421, 309117, 7315769, 21947307]

約数ペア:

[(1, 21947307), (3, 7315769), (71, 309117), (167, 131421), (213, 103039), (501, 43807), (617, 35571), (1851, 11857)]