21601040

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3803}}^1$

素因数の和:3887

約数の個数: 40

約数和(自身を含む): 50943168

約数和(自身を除く): 29342128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3803, 5680, 7606, 15212, 19015, 30424, 38030, 60848, 76060, 152120, 270013, 304240, 540026, 1080052, 1350065, 2160104, 2700130, 4320208, 5400260, 10800520, 21601040]

約数ペア:

[(1, 21601040), (2, 10800520), (4, 5400260), (5, 4320208), (8, 2700130), (10, 2160104), (16, 1350065), (20, 1080052), (40, 540026), (71, 304240), (80, 270013), (142, 152120), (284, 76060), (355, 60848), (568, 38030), (710, 30424), (1136, 19015), (1420, 15212), (2840, 7606), (3803, 5680)]