19381780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8009}}^1$

素因数の和:8040

約数の個数: 36

約数和(自身を含む): 44743860

約数和(自身を除く): 25362080

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8009, 16018, 32036, 40045, 80090, 88099, 160180, 176198, 352396, 440495, 880990, 969089, 1761980, 1938178, 3876356, 4845445, 9690890, 19381780]

約数ペア:

[(1, 19381780), (2, 9690890), (4, 4845445), (5, 3876356), (10, 1938178), (11, 1761980), (20, 969089), (22, 880990), (44, 440495), (55, 352396), (110, 176198), (121, 160180), (220, 88099), (242, 80090), (484, 40045), (605, 32036), (1210, 16018), (2420, 8009)]