19456780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{138977}}^1$

素因数の和:138993

約数の個数: 24

約数和(自身を含む): 46696608

約数和(自身を除く): 27239828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 138977, 277954, 555908, 694885, 972839, 1389770, 1945678, 2779540, 3891356, 4864195, 9728390, 19456780]

約数ペア:

[(1, 19456780), (2, 9728390), (4, 4864195), (5, 3891356), (7, 2779540), (10, 1945678), (14, 1389770), (20, 972839), (28, 694885), (35, 555908), (70, 277954), (140, 138977)]