164047120

素因数分解:

$2^4\times 5^1\times {\mathrm{2050589}}^1$

素因数の和:2050602

約数の個数: 20

約数和(自身を含む): 381409740

約数和(自身を除く): 217362620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2050589, 4101178, 8202356, 10252945, 16404712, 20505890, 32809424, 41011780, 82023560, 164047120]

約数ペア:

[(1, 164047120), (2, 82023560), (4, 41011780), (5, 32809424), (8, 20505890), (10, 16404712), (16, 10252945), (20, 8202356), (40, 4101178), (80, 2050589)]