20283280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3571}}^1$

素因数の和:3655

約数の個数: 40

約数和(自身を含む): 47836224

約数和(自身を除く): 27552944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3571, 5680, 7142, 14284, 17855, 28568, 35710, 57136, 71420, 142840, 253541, 285680, 507082, 1014164, 1267705, 2028328, 2535410, 4056656, 5070820, 10141640, 20283280]

約数ペア:

[(1, 20283280), (2, 10141640), (4, 5070820), (5, 4056656), (8, 2535410), (10, 2028328), (16, 1267705), (20, 1014164), (40, 507082), (71, 285680), (80, 253541), (142, 142840), (284, 71420), (355, 57136), (568, 35710), (710, 28568), (1136, 17855), (1420, 14284), (2840, 7142), (3571, 5680)]