16780420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{44159}}^1$

素因数の和:44187

約数の個数: 24

約数和(自身を含む): 37094400

約数和(自身を除く): 20313980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 44159, 88318, 176636, 220795, 441590, 839021, 883180, 1678042, 3356084, 4195105, 8390210, 16780420]

約数ペア:

[(1, 16780420), (2, 8390210), (4, 4195105), (5, 3356084), (10, 1678042), (19, 883180), (20, 839021), (38, 441590), (76, 220795), (95, 176636), (190, 88318), (380, 44159)]