17920780

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3331}}^1$

素因数の和:3609

約数の個数: 24

約数和(自身を含む): 37784880

約数和(自身を除く): 19864100

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3331, 5380, 6662, 13324, 16655, 33310, 66620, 896039, 1792078, 3584156, 4480195, 8960390, 17920780]

約数ペア:

[(1, 17920780), (2, 8960390), (4, 4480195), (5, 3584156), (10, 1792078), (20, 896039), (269, 66620), (538, 33310), (1076, 16655), (1345, 13324), (2690, 6662), (3331, 5380)]