408028520

素因数分解:

$2^3\times 5^1\times {\mathrm{10200713}}^1$

素因数の和:10200724

約数の個数: 16

約数和(自身を含む): 918064260

約数和(自身を除く): 510035740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10200713, 20401426, 40802852, 51003565, 81605704, 102007130, 204014260, 408028520]

約数ペア:

[(1, 408028520), (2, 204014260), (4, 102007130), (5, 81605704), (8, 51003565), (10, 40802852), (20, 20401426), (40, 10200713)]