28905680

素因数分解:

$2^4\times 5^1\times {\mathrm{361321}}^1$

素因数の和:361334

約数の個数: 20

約数和(自身を含む): 67205892

約数和(自身を除く): 38300212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 361321, 722642, 1445284, 1806605, 2890568, 3613210, 5781136, 7226420, 14452840, 28905680]

約数ペア:

[(1, 28905680), (2, 14452840), (4, 7226420), (5, 5781136), (8, 3613210), (10, 2890568), (16, 1806605), (20, 1445284), (40, 722642), (80, 361321)]