397339720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{431891}}^1$

素因数の和:431925

約数の個数: 32

約数和(自身を含む): 932886720

約数和(自身を除く): 535547000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 431891, 863782, 1727564, 2159455, 3455128, 4318910, 8637820, 9933493, 17275640, 19866986, 39733972, 49667465, 79467944, 99334930, 198669860, 397339720]

約数ペア:

[(1, 397339720), (2, 198669860), (4, 99334930), (5, 79467944), (8, 49667465), (10, 39733972), (20, 19866986), (23, 17275640), (40, 9933493), (46, 8637820), (92, 4318910), (115, 3455128), (184, 2159455), (230, 1727564), (460, 863782), (920, 431891)]