21921000940

素因数分解:

$2^2\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{805327}}^1$

素因数の和:806697

約数の個数: 24

約数和(自身を含む): 46067982912

約数和(自身を除く): 24146981972

約数列:

[1, 2, 4, 5, 10, 20, 1361, 2722, 5444, 6805, 13610, 27220, 805327, 1610654, 3221308, 4026635, 8053270, 16106540, 1096050047, 2192100094, 4384200188, 5480250235, 10960500470, 21921000940]

約数ペア:

[(1, 21921000940), (2, 10960500470), (4, 5480250235), (5, 4384200188), (10, 2192100094), (20, 1096050047), (1361, 16106540), (2722, 8053270), (5444, 4026635), (6805, 3221308), (13610, 1610654), (27220, 805327)]