77720560

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2213}}^1$

素因数の和:2665

約数の個数: 40

約数和(自身を含む): 181193760

約数和(自身を除く): 103473200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 878, 1756, 2195, 2213, 3512, 4390, 4426, 7024, 8780, 8852, 11065, 17560, 17704, 22130, 35120, 35408, 44260, 88520, 177040, 971507, 1943014, 3886028, 4857535, 7772056, 9715070, 15544112, 19430140, 38860280, 77720560]

約数ペア:

[(1, 77720560), (2, 38860280), (4, 19430140), (5, 15544112), (8, 9715070), (10, 7772056), (16, 4857535), (20, 3886028), (40, 1943014), (80, 971507), (439, 177040), (878, 88520), (1756, 44260), (2195, 35408), (2213, 35120), (3512, 22130), (4390, 17704), (4426, 17560), (7024, 11065), (8780, 8852)]