21622220

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{4019}}^1$

素因数の和:4297

約数の個数: 24

約数和(自身を含む): 45586800

約数和(自身を除く): 23964580

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 4019, 5380, 8038, 16076, 20095, 40190, 80380, 1081111, 2162222, 4324444, 5405555, 10811110, 21622220]

約数ペア:

[(1, 21622220), (2, 10811110), (4, 5405555), (5, 4324444), (10, 2162222), (20, 1081111), (269, 80380), (538, 40190), (1076, 20095), (1345, 16076), (2690, 8038), (4019, 5380)]