20418940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{44389}}^1$

素因数の和:44421

約数の個数: 24

約数和(自身を含む): 44745120

約数和(自身を除く): 24326180

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 44389, 88778, 177556, 221945, 443890, 887780, 1020947, 2041894, 4083788, 5104735, 10209470, 20418940]

約数ペア:

[(1, 20418940), (2, 10209470), (4, 5104735), (5, 4083788), (10, 2041894), (20, 1020947), (23, 887780), (46, 443890), (92, 221945), (115, 177556), (230, 88778), (460, 44389)]