81787010

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1\times {\mathrm{563}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 150249600

約数和(自身を除く): 68462590

約数列:

[1, 2, 5, 10, 73, 146, 199, 365, 398, 563, 730, 995, 1126, 1990, 2815, 5630, 14527, 29054, 41099, 72635, 82198, 112037, 145270, 205495, 224074, 410990, 560185, 1120370, 8178701, 16357402, 40893505, 81787010]

約数ペア:

[(1, 81787010), (2, 40893505), (5, 16357402), (10, 8178701), (73, 1120370), (146, 560185), (199, 410990), (365, 224074), (398, 205495), (563, 145270), (730, 112037), (995, 82198), (1126, 72635), (1990, 41099), (2815, 29054), (5630, 14527)]