64432240

素因数分解:

$2^4\times 5^1\times {\mathrm{805403}}^1$

素因数の和:805416

約数の個数: 20

約数和(自身を含む): 149805144

約数和(自身を除く): 85372904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805403, 1610806, 3221612, 4027015, 6443224, 8054030, 12886448, 16108060, 32216120, 64432240]

約数ペア:

[(1, 64432240), (2, 32216120), (4, 16108060), (5, 12886448), (8, 8054030), (10, 6443224), (16, 4027015), (20, 3221612), (40, 1610806), (80, 805403)]