18394940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{39989}}^1$

素因数の和:40021

約数の個数: 24

約数和(自身を含む): 40309920

約数和(自身を除く): 21914980

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 39989, 79978, 159956, 199945, 399890, 799780, 919747, 1839494, 3678988, 4598735, 9197470, 18394940]

約数ペア:

[(1, 18394940), (2, 9197470), (4, 4598735), (5, 3678988), (10, 1839494), (20, 919747), (23, 799780), (46, 399890), (92, 199945), (115, 159956), (230, 79978), (460, 39989)]