19980499

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{5521}}^1$

素因数の和:5586

約数の個数: 16

約数和(自身を含む): 25445376

約数和(自身を除く): 5464877

約数列:

[1, 7, 11, 47, 77, 329, 517, 3619, 5521, 38647, 60731, 259487, 425117, 1816409, 2854357, 19980499]

約数ペア:

[(1, 19980499), (7, 2854357), (11, 1816409), (47, 425117), (77, 259487), (329, 60731), (517, 38647), (3619, 5521)]