28840220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{35171}}^1$

素因数の和:35221

約数の個数: 24

約数和(自身を含む): 62043408

約数和(自身を除く): 33203188

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 35171, 70342, 140684, 175855, 351710, 703420, 1442011, 2884022, 5768044, 7210055, 14420110, 28840220]

約数ペア:

[(1, 28840220), (2, 14420110), (4, 7210055), (5, 5768044), (10, 2884022), (20, 1442011), (41, 703420), (82, 351710), (164, 175855), (205, 140684), (410, 70342), (820, 35171)]