21917037

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1\times {\mathrm{449}}^1$

素因数の和:812

約数の個数: 16

約数和(自身を含む): 29937600

約数和(自身を除く): 8020563

約数列:

[1, 3, 53, 159, 307, 449, 921, 1347, 16271, 23797, 48813, 71391, 137843, 413529, 7305679, 21917037]

約数ペア:

[(1, 21917037), (3, 7305679), (53, 413529), (159, 137843), (307, 71391), (449, 48813), (921, 23797), (1347, 16271)]