20044720

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3529}}^1$

素因数の和:3613

約数の個数: 40

約数和(自身を含む): 47273760

約数和(自身を除く): 27229040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3529, 5680, 7058, 14116, 17645, 28232, 35290, 56464, 70580, 141160, 250559, 282320, 501118, 1002236, 1252795, 2004472, 2505590, 4008944, 5011180, 10022360, 20044720]

約数ペア:

[(1, 20044720), (2, 10022360), (4, 5011180), (5, 4008944), (8, 2505590), (10, 2004472), (16, 1252795), (20, 1002236), (40, 501118), (71, 282320), (80, 250559), (142, 141160), (284, 70580), (355, 56464), (568, 35290), (710, 28232), (1136, 17645), (1420, 14116), (2840, 7058), (3529, 5680)]