25530280

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{811}}^1$

素因数の和:1609

約数の個数: 32

約数和(自身を含む): 57587040

約数和(自身を除く): 32056760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 811, 1574, 1622, 3148, 3244, 3935, 4055, 6296, 6488, 7870, 8110, 15740, 16220, 31480, 32440, 638257, 1276514, 2553028, 3191285, 5106056, 6382570, 12765140, 25530280]

約数ペア:

[(1, 25530280), (2, 12765140), (4, 6382570), (5, 5106056), (8, 3191285), (10, 2553028), (20, 1276514), (40, 638257), (787, 32440), (811, 31480), (1574, 16220), (1622, 15740), (3148, 8110), (3244, 7870), (3935, 6488), (4055, 6296)]