638392016

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{448309}}^1$

素因数の和:448406

約数の個数: 20

約数和(自身を含む): 1250784900

約数和(自身を除く): 612392884

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 448309, 896618, 1793236, 3586472, 7172944, 39899501, 79799002, 159598004, 319196008, 638392016]

約数ペア:

[(1, 638392016), (2, 319196008), (4, 159598004), (8, 79799002), (16, 39899501), (89, 7172944), (178, 3586472), (356, 1793236), (712, 896618), (1424, 448309)]