19278909

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3109}}^1$

素因数の和:3181

約数の個数: 24

約数和(自身を含む): 30565080

約数和(自身を除く): 11286171

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 2067, 3109, 6201, 9327, 27981, 40417, 121251, 164777, 363753, 494331, 1482993, 2142101, 6426303, 19278909]

約数ペア:

[(1, 19278909), (3, 6426303), (9, 2142101), (13, 1482993), (39, 494331), (53, 363753), (117, 164777), (159, 121251), (477, 40417), (689, 27981), (2067, 9327), (3109, 6201)]