16640240

素因数分解:

$2^4\times 5^1\times {\mathrm{208003}}^1$

素因数の和:208016

約数の個数: 20

約数和(自身を含む): 38688744

約数和(自身を除く): 22048504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 208003, 416006, 832012, 1040015, 1664024, 2080030, 3328048, 4160060, 8320120, 16640240]

約数ペア:

[(1, 16640240), (2, 8320120), (4, 4160060), (5, 3328048), (8, 2080030), (10, 1664024), (16, 1040015), (20, 832012), (40, 416006), (80, 208003)]