19891039973

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{367}}^1\times {\mathrm{1051}}^1$

素因数の和:1617

約数の個数: 32

約数和(自身を含む): 23413985280

約数和(自身を除く): 3522945307

約数列:

[1, 7, 53, 139, 367, 371, 973, 1051, 2569, 7357, 7367, 19451, 51013, 51569, 55703, 136157, 146089, 357091, 385717, 389921, 1022623, 2700019, 2703689, 7742717, 18925823, 20443001, 53614663, 54199019, 143101007, 375302641, 2841577139, 19891039973]

約数ペア:

[(1, 19891039973), (7, 2841577139), (53, 375302641), (139, 143101007), (367, 54199019), (371, 53614663), (973, 20443001), (1051, 18925823), (2569, 7742717), (7357, 2703689), (7367, 2700019), (19451, 1022623), (51013, 389921), (51569, 385717), (55703, 357091), (136157, 146089)]