18391720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19991}}^1$

素因数の和:20025

約数の個数: 32

約数和(自身を含む): 43182720

約数和(自身を除く): 24791000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 19991, 39982, 79964, 99955, 159928, 199910, 399820, 459793, 799640, 919586, 1839172, 2298965, 3678344, 4597930, 9195860, 18391720]

約数ペア:

[(1, 18391720), (2, 9195860), (4, 4597930), (5, 3678344), (8, 2298965), (10, 1839172), (20, 919586), (23, 799640), (40, 459793), (46, 399820), (92, 199910), (115, 159928), (184, 99955), (230, 79964), (460, 39982), (920, 19991)]