12887920

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2269}}^1$

素因数の和:2353

約数の個数: 40

約数和(自身を含む): 30399840

約数和(自身を除く): 17511920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2269, 2840, 4538, 5680, 9076, 11345, 18152, 22690, 36304, 45380, 90760, 161099, 181520, 322198, 644396, 805495, 1288792, 1610990, 2577584, 3221980, 6443960, 12887920]

約数ペア:

[(1, 12887920), (2, 6443960), (4, 3221980), (5, 2577584), (8, 1610990), (10, 1288792), (16, 805495), (20, 644396), (40, 322198), (71, 181520), (80, 161099), (142, 90760), (284, 45380), (355, 36304), (568, 22690), (710, 18152), (1136, 11345), (1420, 9076), (2269, 5680), (2840, 4538)]