18469940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13007}}^1$

素因数の和:13087

約数の個数: 24

約数和(自身を含む): 39336192

約数和(自身を除く): 20866252

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13007, 26014, 52028, 65035, 130070, 260140, 923497, 1846994, 3693988, 4617485, 9234970, 18469940]

約数ペア:

[(1, 18469940), (2, 9234970), (4, 4617485), (5, 3693988), (10, 1846994), (20, 923497), (71, 260140), (142, 130070), (284, 65035), (355, 52028), (710, 26014), (1420, 13007)]