17986940

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2003}}^1$

素因数の和:2461

約数の個数: 24

約数和(自身を含む): 37875600

約数和(自身を除く): 19888660

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2003, 2245, 4006, 4490, 8012, 8980, 10015, 20030, 40060, 899347, 1798694, 3597388, 4496735, 8993470, 17986940]

約数ペア:

[(1, 17986940), (2, 8993470), (4, 4496735), (5, 3597388), (10, 1798694), (20, 899347), (449, 40060), (898, 20030), (1796, 10015), (2003, 8980), (2245, 8012), (4006, 4490)]