81120760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289717}}^1$

素因数の和:289735

約数の個数: 32

約数和(自身を含む): 208596960

約数和(自身を除く): 127476200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289717, 579434, 1158868, 1448585, 2028019, 2317736, 2897170, 4056038, 5794340, 8112076, 10140095, 11588680, 16224152, 20280190, 40560380, 81120760]

約数ペア:

[(1, 81120760), (2, 40560380), (4, 20280190), (5, 16224152), (7, 11588680), (8, 10140095), (10, 8112076), (14, 5794340), (20, 4056038), (28, 2897170), (35, 2317736), (40, 2028019), (56, 1448585), (70, 1158868), (140, 579434), (280, 289717)]