25000520

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{8803}}^1$

素因数の和:8885

約数の個数: 32

約数和(自身を含む): 57049920

約数和(自身を除く): 32049400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 8803, 17606, 35212, 44015, 70424, 88030, 176060, 352120, 625013, 1250026, 2500052, 3125065, 5000104, 6250130, 12500260, 25000520]

約数ペア:

[(1, 25000520), (2, 12500260), (4, 6250130), (5, 5000104), (8, 3125065), (10, 2500052), (20, 1250026), (40, 625013), (71, 352120), (142, 176060), (284, 88030), (355, 70424), (568, 44015), (710, 35212), (1420, 17606), (2840, 8803)]