20217351

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12503}}^1$

素因数の和:12531

約数の個数: 24

約数和(自身を含む): 34210944

約数和(自身を除く): 13993593

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12503, 37509, 87521, 137533, 262563, 412599, 612647, 962731, 1837941, 2888193, 6739117, 20217351]

約数ペア:

[(1, 20217351), (3, 6739117), (7, 2888193), (11, 1837941), (21, 962731), (33, 612647), (49, 412599), (77, 262563), (147, 137533), (231, 87521), (539, 37509), (1617, 12503)]