80180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 178080

約数和(自身を除く): 97900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 211, 380, 422, 844, 1055, 2110, 4009, 4220, 8018, 16036, 20045, 40090, 80180]

約数ペア:

[(1, 80180), (2, 40090), (4, 20045), (5, 16036), (10, 8018), (19, 4220), (20, 4009), (38, 2110), (76, 1055), (95, 844), (190, 422), (211, 380)]