64404880

素因数分解:

$2^4\times 5^1\times {\mathrm{805061}}^1$

素因数の和:805074

約数の個数: 20

約数和(自身を含む): 149741532

約数和(自身を除く): 85336652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805061, 1610122, 3220244, 4025305, 6440488, 8050610, 12880976, 16101220, 32202440, 64404880]

約数ペア:

[(1, 64404880), (2, 32202440), (4, 16101220), (5, 12880976), (8, 8050610), (10, 6440488), (16, 4025305), (20, 3220244), (40, 1610122), (80, 805061)]