21431230

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{269}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 40124160

約数和(自身を除く): 18692930

約数列:

[1, 2, 5, 10, 31, 62, 155, 257, 269, 310, 514, 538, 1285, 1345, 2570, 2690, 7967, 8339, 15934, 16678, 39835, 41695, 69133, 79670, 83390, 138266, 345665, 691330, 2143123, 4286246, 10715615, 21431230]

約数ペア:

[(1, 21431230), (2, 10715615), (5, 4286246), (10, 2143123), (31, 691330), (62, 345665), (155, 138266), (257, 83390), (269, 79670), (310, 69133), (514, 41695), (538, 39835), (1285, 16678), (1345, 15934), (2570, 8339), (2690, 7967)]