128949280

素因数分解:

$2^5\times 5^1\times {\mathrm{805933}}^1$

素因数の和:805948

約数の個数: 24

約数和(自身を含む): 304643052

約数和(自身を除く): 175693772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 805933, 1611866, 3223732, 4029665, 6447464, 8059330, 12894928, 16118660, 25789856, 32237320, 64474640, 128949280]

約数ペア:

[(1, 128949280), (2, 64474640), (4, 32237320), (5, 25789856), (8, 16118660), (10, 12894928), (16, 8059330), (20, 6447464), (32, 4029665), (40, 3223732), (80, 1611866), (160, 805933)]